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Engine Controls - Self-Diagnostics - 2.8l Audi A4 B5 рестайлинг

Testing & Diagnostics ~17684 words

DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Note. Vehicle manufacturer does not support diagnostic information using aftermarket scan tools. Limited diagnostic information is available.

Generic Scan Tool CodeVAG 1551 CodeMalfunction/Affected Sensor Or Circuit
P0102 (1)(1) 16486MAF Circuit Low Input
P0103 (1)(1) 16487MAF Circuit High Input
P0112 (1)(1) 16496Intake Air Temperature Circuit Low Input
P0113 (1)(1) 16497Intake Air Temperature Circuit High Input
P0116 (1)(1) 16500ECT Circuit Range/Performance Problem
P0117 (1)(1) 16501ECT Circuit Low Input
P0118 (1)(1) 16502ECT Circuit High Input
P0121 (1)(1) 16505TP Sensor Circuit Range/Performance Problem
P0122 (1)(1) 16506TP Sensor Circuit Low Input
P0123 (1)(1) 16507TP Sensor Circuit High Input
P0130 (1)(1) 16514HO2S Circuit Malfunction (Bank 1, Sensor 1)
P0131 (1)(1) 16515HO2S Circuit Low Voltage (Bank 1, Sensor 1)
P0132 (1)(1) 16516HO2S Circuit High Voltage (Bank 1, Sensor 1)
P0133 (1)(1) 16517HO2S Circuit Slow Response (Bank 1, Sensor 1)
P0134 (1)(1) 16518HO2S Circuit No Activity Detected (Bank 1, Sensor 1)
P0136 (1)(1) 16520HO2S Circuit Malfunction (Bank 1, Sensor 2)
P0137 (1)(1) 16521HO2S Circuit Low Voltage (Bank 1, Sensor 2)
P0138 (1)(1) 16522HO2S Circuit High Voltage (Bank 1, Sensor 2)
P0140 (1)(1) 16524HO2S Circuit No Activity Detected (Bank 1, Sensor 2)
P0150 (1)(1) 16534HO2S Circuit Malfunction (Bank 2, Sensor 1)
P0151 (1)(1) 16535HO2S Circuit Low Voltage (Bank 2, Sensor 1)
P0152 (1)(1) 16536HO2S Circuit High Voltage (Bank 2, Sensor 1)
P0153 (1)(1) 16537HO2S Circuit Slow Response (Bank 2, Sensor 1)
P0154 (1)(1) 16538HO2S Circuit No Activity Detected (Bank 2, Sensor 1)
P0156 (1)(1) 16540HO2S Circuit Malfunction (Bank 2, Sensor 2)
P0157 (1)(1) 16541HO2S Circuit Low Voltage (Bank 2, Sensor 2)
P0158 (1)(1) 16542HO2S Circuit High Voltage (Bank 2, Sensor 2)
P0159 (1)(1) 16543HO2S Circuit Slow Response (Bank 2, Sensor 2)
P0160 (1)(1) 16544HO2S Circuit No Activity Detected (Bank 2, Sensor 2)
P0300 (2)(2) 16684Random/Multiple Misfire Detected
P0301 (2)(2) 16685Cylinder No. 1 Misfire Detected
P0302 (2)(2) 16686Cylinder No. 2 Misfire Detected
P0303 (2)(2) 16687Cylinder No. 3 Misfire Detected
P0304 (2)(2) 16688Cylinder No. 4 Misfire Detected
P0305 (2)(2) 16689Cylinder No. 5 Misfire Detected
P0306 (2)(2) 16690Cylinder No. 6 Misfire Detected
P0321 (1)(1) 16705Ignition Engine Speed Input Circuit Range/Performance
P0322 (3)(3) 16706Ignition Engine Speed Input Circuit No Signal
P0327 (3)(3) 16711Knock Sensor No. 1 Circuit Low Input
P0328 (3)(3) 16712Knock Sensor No. 1 Circuit High Input
P0332 (3)(3) 16716Knock Sensor No. 2 Circuit Low Input
P0333 (3)(3) 16717Knock Sensor No. 2 Circuit High Input
P0411 (1)(1) 16795Secondary Air Injection System Incorrect Flow Detected
P0422 (1)(1) 16806Main Catalyst Efficiency Below Threshold (Bank 1)
P0432 (1)(1) 16816Main Catalyst Efficiency Below Threshold (Bank 2)
P0441 (4)(4) 16825EVAP Emission Control System Incorrect Purge Flow
P0442 (4)(4) 16826EVAP Emission Control System Small Leak Detected
P0455 (4)(4) 16839EVAP Emission Control System Gross Leak Detected
P0501 (1)(1) 16885Vehicle Speed Sensor Range/Performance
P0506 (1)(1) 16890Idle Control System RPM Lower Than Expected
P0507 (1)(1) 16891Idle Control System RPM Higher Than Expected
P0601 (1)(1) 16985Internal Controller Module Memory Check Sum Error
P0604 (1)(1) 16988Internal Controller Module Memory RAM Error
P1102 (1)(1) 17510HO2S Heater Circuit Short to B+ (Bank 1, Sensor 1)
P1105 (1)(1) 17513HO2S Heater Circuit Short to B+ (Bank 1, Sensor 2)
P1107 (1)(1) 17515HO2S Heater Circuit Short To B+ (Bank 2, Sensor 1)
P1110 (1)(1) 17518HO2S Heater Circuit Short To B+ (Bank 2, Sensor 2)
P1127 (1)(1) 17535Long Term Fuel Trim Multiplicative Too Rich (Bank 1)
P1128 (1)(1) 17536Long Term Fuel Trim Multiplicative Too Lean (Bank 1)
P1129 (1)(1) 17537Long Term Fuel Trim Multiplicative Too Rich (Bank 2)
P1130 (1)(1) 17538Long Term Fuel Trim Multiplicative Too Lean (Bank 2)
P1136 (1)(1) 17544Long Term Fuel Trim Additive Too Lean (Bank 1)
P1137 (1)(1) 17545Long Term Fuel Trim Additive Too Rich (Bank 1)
P1138 (1)(1) 17546Long Term Fuel Trim Additive Too Lean (Bank 2)
P1139 (1)(1) 17547Long Term Fuel Trim Additive Too Rich (Bank 2)
P1141 (1)(1) 17549Load Calculation Cross Check Range/Performance
P1176 (4)(4) 17584O2 Correction Behind Catalyst B1 Limit Attained
P1177 (4)(4) 17585O2 Correction Behind Catalyst B2 Limit Attained
P1196 (1)(1) 17604O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 1)
P1197 (1)(1) 17605O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 1)
P1198 (1)(1) 17606O2 Sensor Heater Circuit Electrical Malfunction (Bank 1, Sensor 2)
P1199 (1)(1) 17607O2 Sensor Heater Circuit Electrical Malfunction (Bank 2, Sensor 2)
P1213 (3)(3) 17621Cylinder No. 1 Fuel Injector Circuit Short To B+
P1214 (3)(3) 17622Cylinder No. 2 Fuel Injector Circuit Short To B+
P1215 (3)(3) 17623Cylinder No. 3 Fuel Injector Circuit Short To B+
P1216 (3)(3) 17624Cylinder No. 4 Fuel Injector Circuit Short To B+
P1217 (3)(3) 17625Cylinder No. 5 Fuel Injector Circuit Short To B+
P1218 (3)(3) 17626Cylinder No. 6 Fuel Injector Circuit Short To B+
P1225 (3)(3) 17633Cylinder No. 1 Fuel Injector Circuit Short To Ground
P1226 (3)(3) 17634Cylinder No. 2 Fuel Injector Circuit Short To Ground
P1227 (3)(3) 17635Cylinder No. 3 Fuel Injector Circuit Short To Ground
P1228 (3)(3) 17636Cylinder No. 4 Fuel Injector Circuit Short To Ground
P1229 (3)(3) 17637Cylinder No. 5 Fuel Injector Circuit Short To Ground
P1230 (3)(3) 17638Cylinder No. 6 Fuel Injector Circuit Short To Ground
P1237 (3)(3) 17645Cylinder No. 1 Fuel Injector Open Circuit
P1238 (3)(3) 17646Cylinder No. 2 Fuel Injector Open Circuit
P1239 (3)(3) 17647Cylinder No. 3 Fuel Injector Open Circuit
P1240 (3)(3) 17648Cylinder No. 4 Fuel Injector Open Circuit
P1241 (3)(3) 17649Cylinder No. 5 Fuel Injector Open Circuit
P1242 (3)(3) 17650Cylinder No. 6 Fuel Injector Open Circuit
P1250 (4)(4) 17658Fuel Level Too Low
P1325 (4)(4) 17733Cylinder No. 1 Knock Control Limit Attained
P1326 (4)(4) 17734Cylinder No. 2 Knock Control Limit Attained
P1327 (4)(4) 17735Cylinder No. 3 Knock Control Limit Attained
P1328 (4)(4) 17736Cylinder No. 4 Knock Control Limit Attained
P1329 (4)(4) 17737Cylinder No. 5 Knock Control Limit Attained
P1330 (4)(4) 17738Cylinder No. 6 Knock Control Limit Attained
P1337 (1)(1) 17745Camshaft Position Sensor Short To Ground (Bank 1)
P1338 (1)(1) 17746Camshaft Position Sensor Open Circuit Or Short To B+ (Bank 1)
P1386 (1)(1) 17794Internal Control Module Knock Control Circuit Error
P1391 (1)(1) 17799Camshaft Position (CMP) Sensor Short To Ground (Bank 2)
P1392 (1)(1) 17800Camshaft Position (CMP) Sensor Open Circuit Or Short To B+ (Bank 2)
P1410 (1)(1) 17818Fuel Tank Ventilation Valve Circuit Short To B+
P1421 (3)(3) 17829Secondary Air Injection Valve Circuit Short To Ground
P1422 (3)(3) 17830Secondary Air Injection System Control Valve Circuit Short To B+
P1425 (1)(1) 17833Tank Vent Valve Short To Ground
P1426 (1)(1) 17834Tank Vent Valve Open
P1432 (1)(1) 17840Secondary Air Injection Valve Open
P1433 (1)(1) 17841Secondary Air Injection System Pump Relay Circuit Open
P1434 (1)(1) 17842Secondary Air Injection System Pump Relay Circuit Short To B+
P1435 (1)(1) 17843Secondary Air Injection System Pump Relay Circuit Short To Ground
P1436 (1)(1) 17844Secondary Air Injection System Pump Relay Circuit Electrical Malfunction
P1471 (4)(4) 17879EVAP Emission Control LDP Circuit Short To B+
P1472 (4)(4) 17880EVAP Emission Control LDP Circuit Short To Ground
P1473 (4)(4) 17881EVAP Emission Control LDP Open Circuit
P1476 (4)(4) 17884EVAP Emission Control LDP Circuit Malfunction/Insufficient Vacuum
P1477 (4)(4) 17885EVAP Emission Control LDP Circuit Malfunction
P1500 (3)(3) 17908Fuel Pump Relay Circuit Electrical Malfunction
P1501 (3)(3) 17909Fuel Pump Relay Circuit Short To Ground
P1502 (3)(3) 17910Fuel Pump Relay Circuit Short To B+
P1505 (1)(1) 17913CTP Switch Does Not Close (Open Circuit)
P1512 (3)(3) 17920Intake Manifold Change-Over Valve Circuit Short To B+
P1515 (3)(3) 17923Intake Manifold Change-Over Valve Circuit Short To Ground
P1516 (3)(3) 17924Intake Manifold Change-Over Valve Circuit Open
P1519 (1)(1) 17927Intake Camshaft Control Malfunction (Bank 1)
P1522 (1)(1) 17930Intake Camshaft Control Malfunction (Bank 2)
P1543 (1)(1) 17951Throttle Actuation Potentiometer Signal Too Low
P1544 (1)(1) 17952Throttle Actuation Potentiometer Signal Too High
P1545 (1)(1) 17953Throttle Position Control Malfunction
P1558 (1)(1) 17966Throttle Actuator Electrical Malfunction
P1559 (4)(4) 17967Idle Speed Control Throttle Position Adaptation Malfunction
P1560 (4)(4) 17968Maximum Engine Speed Exceeded
P1564 (4)(4) 17972Idle Speed Control Throttle Position Low Voltage During Adaptation
P1565 (1)(1) 17973Idle Speed Control Throttle Position Lower Impact Not Attained
P1600 (3)(3) 18008Power Supply (B+) Terminal 15 Low Voltage
P1602 (4)(4) 18010Power Supply (B+) Terminal 30 Low Voltage
P1606 (4)(4) 18014Rough Road/Acceleration Specification Engine Torque ABS-PCM Electrical Malfunction
P1612 (3)(3) 18020PCM Incorrectly Coded (Vehicle With A/T Is Coded For M/T)
P1612 (4)(4) 18020PCM Incorrectly Coded (Vehicle With ASR Is Not Coded For ASR)
P1624 (3)(3) 18032MIL Request Signal Active
P1626 (1)(1) 18034CAN Bus Missing Message From Transmission Controller
P1640 (1)(1) 18048Internal Controller Module (EEPROM) Error
P1681 (3)(3) 18089Controller Unit Programming Not Finished
P1690 (4)(4) 18098MIL Malfunction
(1) MIL is switched on after 2 trips. (2) MIL is switched on after 2 trips or will blink. (3) MIL is switched on immediately. (4) MIL is not switched on.
(1)MIL is switched on after 2 trips.
(2)MIL is switched on after 2 trips or will blink.
(3)MIL is switched on immediately.
(4)MIL is not switched on.

DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DIAGNOSTIC TESTS

Note. It is necessary to generate a PCM readiness code if PCM memory is cleared, battery voltage is disconnected or PCM is disconnected. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If PCM was replaced, see PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

Note. To properly diagnose vehicle, it is recommended to use VAG 1551 scan tool and VAG 1598/22 test box.

DTC P0102/16486 & P0103/16487: MAF CIRCUIT FAILURE

  1. Inspect Mass Airflow (MAF) sensor connector for looseness and/or corrosion. Repair sensor connector as necessary. If sensor connector was okay, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check MAF sensor fuse. Replace if necessary. All electrical accessories must be turned off (coolant fan must not run during test). Turn ignition off. Disconnect MAF sensor connector. Turn ignition on. Using a DVOM, check voltage between MAF sensor connector terminals No. 2 and 3. Voltage should be 9-14.5 volts. If voltage is within specification, go to step 4 . If voltage is not within specification, go to next step.
  3. Repair open wiring between MAF sensor and PCM as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between MAF sensor connector terminal No. 1 and test box socket 13. Check resistance between MAF sensor connector terminal No. 2 and test box socket 12. Resistance should be a maximum of 1.5 ohms for each reading. If resistance is within specification, go to next step. If resistance is not within specification, repair open circuit between MAF sensor connector and PCM connector. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between MAF sensor connector terminal No. 1 and test box socket 12. DVOM reading should be infinity. If reading is infinity, go to next step. If reading is not infinity, repair short circuit between MAF sensor connector and PCM connector. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Adjust DVOM to 20 VDC range. Using DVOM, check voltage between MAF sensor connector terminal No. 1 and ground. Check voltage between MAF sensor connector terminal No. 2 and ground. DVOM should indicate zero volts for both readings. If voltage is as specified, go to next step. If voltage is not as specified, repair short to voltage as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  7. Replace MAF sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0112/16496 & P0113/16497: IAT SENSOR CIRCUIT FAILURE

  1. Inspect Intake Air Temperature (IAT) sensor connector for looseness and/or corrosion. Repair sensor connector as necessary. If sensor connector was okay, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect IAT sensor 2-pin connector. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between IAT sensor connector terminals and specified test box sockets: IAT sensor connector terminal No. 1 and test box socket 54. IAT sensor connector terminal No. 2 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Using DVOM, check resistance between specified terminals: IAT sensor connector terminal No. 1 and ground. IAT sensor connector terminal No. 1 and test box socket 67. IAT sensor connector terminals No. 1 and 2. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between IAT sensor 2-pin harness connector terminal No. 1 and ground, then terminal No. 2 and ground. Voltage should be zero volts. If voltage is as specified, go to next step. If voltage is not as specified, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, check resistance between IAT sensor terminals. Resistance should be 1.5-3.5 k/ohms at 68°F (20°C). If resistance is as specified, go to next step. If resistance is not as specified, replace IAT sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. NOTE: If testing to this point has not identified a problem, failure is most likely an intermittent failure of IAT sensor.
  6. Using VAG 1551, monitor IAT sensor output. When IAT sensor reads approximately ambient temperature, remove IAT sensor from engine without disconnecting IAT sensor connector.
  7. Using VAG 1551, monitor IAT sensor output. Cool IAT sensor using a commercially available chilling spray. Observe IAT sensor output. If temperature value decreases, IAT sensor is okay. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If IAT sensor value does not decrease, replace IAT sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0116/16500, P0117/16501 & P0118/16502: ECT SENSOR CIRCUIT FAILURE

  1. Inspect Engine Coolant Temperature (ECT) sensor connector for looseness and/or corrosion. Repair sensor connector as necessary. If sensor connector was okay, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect ECT sensor 4-pin connector. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between ECT sensor connector terminals and specified test box sockets: ECT sensor connector terminal No. 1 and test box socket 53. ECT sensor connector terminal No. 3 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Using DVOM, check resistance between specified terminals: ECT sensor connector terminal No. 1 and ground. ECT sensor connector terminal No. 1 and test box socket 67. ECT sensor connector terminals No. 1 and 3. ECT sensor connector terminal No. 3 and ground. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between ECT sensor 4-pin harness connector terminal No. 1 and ground, then terminal No. 3 and ground. Voltage should be zero volts. If voltage is as specified, go to next step. If voltage is not as specified, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, check resistance between ECT sensor terminals No. 1 and 3. See «ECT SENSOR RESISTANCE»(/audi/a4/b5-1999-2001/remont/testing-diagnostics/#engine-controls-self-diagnostics-28l) table. If resistance is to specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not to specification, replace ECT sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
TemperatureOhms
86°F (30°C)1500-2000
176°F (80°C)275-375

ECT SENSOR RESISTANCE

DTC P0121/16505, P0122/16506 & P0123/16507: TP SENSOR CIRCUIT FAILURE

  1. Inspect Throttle Valve Control Module (TVCM) 8-pin connector for looseness and/or corrosion. Repair connector as necessary. If connector was okay, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect TVCM 8-pin connector. Turn ignition on. Using DVOM, check resistance between specified terminals: TVCM connector terminals No. 3 and 7. TVCM connector terminals No. 4 and 7. Voltage should be 9-14.5 volts for first measurement. Voltage should be 4-6 volts for second measurement. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 3 and test box socket 69. TVCM connector terminal No. 4 and test box socket 62. TVCM connector terminal No. 7 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 7 and test box socket 69. TVCM connector terminal No. 7 and test box socket 62. TVCM connector terminal No. 4 and test box socket 67. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0130/16514, P0131/16515 & P0132/16516: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 25. HO2S connector terminal No. 4 and test box socket 26. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 25. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 4 and test box socket 14. HO2S connector terminal No. 3 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0133/16517: HO2S SLOW RESPONSE (BANK 1, SENSOR 1)

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check aging of HO2S (response time). HO2S is located before passenger side 3-way catalytic converter. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P0134/16518: HO2S NO ACTIVITY DETECTED (BANK 1, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 25. HO2S connector terminal No. 4 and test box socket 26. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 25. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 4 and test box socket 14. HO2S connector terminal No. 3 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0136-38/16520-22 & P0140/16524: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 51. HO2S connector terminal No. 4 and test box socket 52. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box socket. HO2S connector terminal No. 4 and test box socket 51. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 4 and test box socket 14. HO2S connector terminal No. 3 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0150-52/16534-36: HO2S CIRCUIT FAILURE (BANK 2, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 39. HO2S connector terminal No. 4 and test box socket 40. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 39. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 14. HO2S connector terminal No. 4 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0153/16537: HO2S SLOW RESPONSE (BANK 2, SENSOR 1)

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check aging of HO2S (response time). HO2S is located before driver side 3-way catalytic converter. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P0154/16538: HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 2, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 39. HO2S connector terminal No. 4 and test box socket 40. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 39. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 14. HO2S connector terminal No. 4 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0156-60/16540-44: HO2S CIRCUIT FAILURE (BANK 2, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Check HO2S heater fuse. Replace if necessary. Turn ignition off. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 28. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0300-06/16684-90: CYLINDER MISFIRE DETECTED

Note. These DTCs can be set if fuel level is too low. DTC P1250 may also set when less than 2 gallons of fuel are remaining in tank.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check misfire detection, fuel injectors and engine speed sensor. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P0321/16705 & P0322/16706: IGN/DIST. CIRCUIT FAILURE

  1. Inspect engine speed sensor 3-pin connector for looseness and/or corrosion. Engine speed sensor is located at left rear of engine. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect engine speed sensor 3-pin connector. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between engine speed sensor connector (harness side) terminals and specified test box sockets: Engine speed sensor connector terminal No. 1 and test box socket 67. Engine speed sensor connector terminal No. 2 and test box socket 63. Engine speed sensor connector terminal No. 3 and test box socket 56. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Using DVOM, check resistance between engine speed sensor connector (harness side) terminals and specified test box sockets: Engine speed sensor connector terminal No. 2 and test box socket 67. Engine speed sensor connector terminal No. 1 and test box socket 63. Engine speed sensor connector terminal No. 1 and test box socket 56. Resistance should be infinity. If resistance is infinity, replace faulty engine speed sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

Knock Sensor No. 1

  1. Inspect knock sensor 3-pin connector for looseness and/or corrosion. Knock sensor No. 1 is located at right side of engine, under intake manifold near front of engine. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect engine speed sensor 3-pin connector. Using DVOM, check resistance between specified knock sensor 3-pin connector (sensor side) terminals. Knock sensor terminals No. 1 and 2. Knock sensor terminals No. 1 and 3. Knock sensor terminals No. 2 and 3. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, replace knock sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 1 and test box socket 68. Knock sensor connector terminal No. 2 and test box socket 67. Knock sensor connector terminal No. 3 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 2 and test box socket 68. Knock sensor connector terminal No. 3 and test box socket 68. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Loosen knock sensor No. 1 and re-tighten to 15 ft. lbs. (20 N.m). Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If DTC is still in memory, replace faulty knock sensor No. 1. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

Knock Sensor No. 2

  1. Inspect knock sensor 3-pin connector for looseness and/or corrosion. Knock sensor No. 2 is located at left side of engine, under intake manifold near rear of engine. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect engine speed sensor 3-pin connector. Using DVOM, check resistance between specified knock sensor 3-pin connector (sensor side) terminals. Knock sensor terminals No. 1 and 2. Knock sensor terminals No. 1 and 3. Knock sensor terminals No. 2 and 3. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, replace knock sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 1 and test box socket 60. Knock sensor connector terminal No. 2 and test box socket 67. Knock sensor connector terminal No. 3 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 2 and test box socket 60. Knock sensor connector terminal No. 3 and test box socket 60. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Loosen knock sensor No. 2 and re-tighten to 15 ft. lbs. (20 N.m). Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If DTC is still in memory, replace faulty knock sensor No. 2. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0411/16795: SECONDARY AIR INJECTION SYSTEM FAILURE

Inspect secondary air injection system integrity. Check left and right combination valves for proper operation. Check secondary air injection pump motor and secondary air injection solenoid valve. Repair or replace system components as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0422/16806: MAIN CATALYST EFFICIENCY BELOW THRESHOLD (BANK 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 25. HO2S connector terminal No. 4 and test box socket 26. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 25. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 4 and test box socket 14. HO2S connector terminal No. 3 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0432/16816: MAIN CATALYST EFFICIENCY BELOW THRESHOLD (BANK 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 39. HO2S connector terminal No. 4 and test box socket 40. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 39. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 14. HO2S connector terminal No. 4 and test box socket 14. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS INTRODUCTION article.

DTC P0441/16825: EVAP SYSTEM FAILURE

  1. Disconnect 2-pin EVAP canister purge regulator valve connector. EVAP canister purge regulator valve is located behind cover in right rear engine compartment. Using a DVOM, measure resistance between valve connector (component side) terminals. Resistance should be 22-30 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace EVAP canister purge regulator valve. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check fuse for EVAP canister purge regulator valve. Replace if necessary. Connect VAG 1527B LED voltage tester between EVAP canister purge regulator valve connector (harness side) terminal No. 1 and ground. Operate starter motor. LED voltage tester should illuminate. If LED voltage tester does not illuminate, go to next step. If LED voltage tester illuminates, go to step 4) .
  3. Inspect wiring between valve connector (harness side) terminal No. 1 and fuse for an open circuit. Maximum resistance is one ohm. If resistance is within specification, go to next step. If resistance is not within specification, repair open circuit as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Check fuel pump relay operation. See SYSTEM & COMPONENT TESTING article. Repair as necessary. If fuel pump relay is okay, go to next step. If fuel pump relay is not okay, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS INTRODUCTION article.
  5. VAG 1551 is necessary to continue diagnosing this code. VAG 1551 is used to check evaporative system. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P0442/16826 & P0455/16839: EVAP SYSTEM FAILURE

  1. Disconnect 3-pin EVAP Leak Detection Pump (LDP) connector. LDP connector is located behind left rear wheel housing liner. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 1 and 3. Resistance should be 640-720 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 2 and 3. Resistance should be 17.5-27.5 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Connect VAG 1527B LED voltage tester between LDP connector (harness side) terminal No. 3 and ground. Start engine and idle. LED voltage tester should illuminate. If LED voltage tester illuminates, system is functioning properly. Test is complete. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. If LED voltage tester does not illuminate, check fuse for LDP. Inspect wiring between LPD connector (harness side) terminal No. 3 and fuse for an open circuit. Check fuel pump relay operation. See SYSTEM & COMPONENT TESTING article. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P0501/16885: VEHICLE SPEED SENSOR FAILURE

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check vehicle speed sensor signal. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P0506/16890 & P0507/16891: IDLE CONTROL SYSTEM FAILURE

  1. VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check vehicle idle speed. Follow test equipment manufacturer's instructions for VAG 1551 operation. After checking idle speed, go to next step.
  2. Inspect Throttle Valve Control Module (TVCM) 8-pin connector for looseness and/or corrosion. Repair connector as necessary. If connector was okay, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition off. Disconnect TVCM 8-pin connector. Turn ignition on. Using DVOM, check resistance between specified terminals: TVCM connector terminals No. 3 and 7. TVCM connector terminals No. 4 and 7. Voltage should be 9-14.5 volts for first measurement. Voltage should be 4-6 volts for second measurement. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  4. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 3 and test box socket 69. TVCM connector terminal No. 4 and test box socket 62. TVCM connector terminal No. 7 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 7 and test box socket 69. TVCM connector terminal No. 7 and test box socket 62. TVCM connector terminal No. 4 and test box socket 67. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Check fuel pressure and residual fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(/audi/a4/b5-1999-2001/remont/testing-diagnostics/#engine-controls-self-diagnostics-28l) table. If fuel pressure is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If fuel pressure is not within specification, repair fuel system as necessary. If fuel system residual pressure is to low, verify no fuel line leaks are present. Replace faulty fuel pressure regulator or leaking fuel injectors. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
FunctionSpecification
System Pressure
With Engine Idling(1) 55-61 psi (4.0-4.2 bar)
With Engine Idling(2) 48-54 (3.3-3.7 bar)
Residual Pressure
Cold Engine(3) 32 psi (2.2 bar)
Warm Engine(3) 44 psi (3.0 bar)
(1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes.
(1)With fuel pressure regulator vacuum hose disconnected.
(2)With fuel pressure regulator vacuum hose connected.
(3)After 10 minutes.

FUEL PRESSURE SPECIFICATIONS

DTC P0601/16985 & P0604/16988: PCM FAILURE

Replace PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS INTRODUCTION article.

DTC P1102/17510: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 27. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1105/17513: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 28. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1107/17515: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 2, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 27. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1110/17518: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 2, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 28. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1127/17535: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO RICH (BANK 1)

Note. Multiplicative applies to entire engine RPM and load range.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check MAF sensor, HO2S control, HO2S located before passenger side 3-way catalytic converter, HO2S located behind passenger side 3-way catalytic converter, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1128/17536: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO LEAN (BANK 1)

Note. Multiplicative applies to entire engine RPM and load range.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check HO2S located before passenger side 3-way catalytic converter, HO2S located behind passenger side 3-way catalytic converter, HO2S control, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1129/17537: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO RICH (BANK 2)

Note. Multiplicative applies to entire engine RPM and load range.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check MAF sensor, HO2S control, HO2S located before driver side 3-way catalytic converter, HO2S located behind driver side 3-way catalytic converter, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1130/17538: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO LEAN (BANK 2)

Note. Multiplicative applies to entire engine RPM and load range.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check HO2S located before driver side 3-way catalytic converter, HO2S located behind driver side 3-way catalytic converter, HO2S control, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1136/17544: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO LEAN (BANK 1)

Note. Additive applies to engine running at idle speed.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check intake air system for leaks, HO2S located before passenger side 3-way catalytic converter, MAF sensor, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1137/17545: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO RICH (BANK 1)

Note. Additive applies to engine running at idle speed.

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 25. HO2S connector terminal No. 4 and test box socket 26. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 25. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 4 and test box socket 14. HO2S connector terminal No. 3 and test box socket 14. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Check fuel pressure and residual fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(/audi/a4/b5-1999-2001/remont/testing-diagnostics/#engine-controls-self-diagnostics-28l) table. If fuel pressure is within specification, go to next step. If fuel pressure is not within specification, repair fuel system as necessary. If fuel system residual pressure is to low, verify no fuel line leaks are present. Replace faulty fuel pressure regulator or leaking fuel injectors. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. FUEL PRESSURE SPECIFICATIONS Function Specification System Pressure With Engine Idling (1) 55-61 psi (4.0-4.2 bar) With Engine Idling (2) 48-54 (3.3-3.7 bar) Residual Pressure Cold Engine (3) 32 psi (2.2 bar) Warm Engine (3) 44 psi (3.0 bar) (1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes.
  7. Inspect exhaust system for leaks. Repair as necessary. If exhaust system was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If exhaust system was not repaired, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1138/17546: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO LEAN (BANK 2)

Note. Additive applies to engine running at idle speed.

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check intake air system for leaks, HO2S located before driver side 3-way catalytic converter, MAF sensor, fuel pressure regulator, residual fuel pressure and fuel injectors. Additionally, Output Diagnostic Test Mode (DTM) is also performed using VAG 1551. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1139/17547: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO RICH (BANK 2)

Note. Additive applies to engine running at idle speed.

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Start engine. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 3 and 4. Voltage should be .4-.5 volts. Turn ignition off. If voltage is within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 39. HO2S connector terminal No. 4 and test box socket 40. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between HO2S connector (harness side) terminal and specified test box socket. HO2S connector terminal No. 4 and test box socket 39. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 3 and test box socket 14. HO2S connector terminal No. 4 and test box socket 14. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short to wiring harness shielding as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Check fuel pressure and residual fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(/audi/a4/b5-1999-2001/remont/testing-diagnostics/#engine-controls-self-diagnostics-28l) table. If fuel pressure is within specification, go to next step. If fuel pressure is not within specification, repair fuel system as necessary. If fuel system residual pressure is to low, verify no fuel line leaks are present. Replace faulty fuel pressure regulator or leaking fuel injectors. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. FUEL PRESSURE SPECIFICATIONS Function Specification System Pressure With Engine Idling (1) 55-61 psi (4.0-4.2 bar) With Engine Idling (2) 48-54 (3.3-3.7 bar) Residual Pressure Cold Engine (3) 32 psi (2.2 bar) Warm Engine (3) 44 psi (3.0 bar) (1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes.
  7. Inspect exhaust system for leaks. Repair as necessary. If exhaust system was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If exhaust system was not repaired, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1141/17549: LOAD CALCULATION CROSS CHECK RANGE/PERFORMANCE

  1. Inspect Mass Airflow (MAF) sensor connector for looseness and/or corrosion. Repair sensor connector as necessary. If sensor connector was okay, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check MAF sensor fuse. Replace if necessary. All electrical accessories must be turned off (coolant fan must not run during test). Turn ignition off. Disconnect MAF sensor connector. Turn ignition on. Using a DVOM, check voltage between MAF sensor connector terminals No. 2 and 3. Voltage should be 9-14.5 volts. If voltage is within specification, go to step 4 . If voltage is not within specification, go to next step.
  3. Repair open wiring between MAF sensor and PCM as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between MAF sensor connector terminal No. 1 and test box socket 13. Check resistance between MAF sensor connector terminal No. 2 and test box socket 12. Resistance should be a maximum of 1.5 ohms for each reading. If resistance is within specification, go to next step. If resistance is not within specification, repair open circuit between MAF sensor connector and PCM connector. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between MAF sensor connector terminal No. 1 and test box socket 12. DVOM reading should be infinity. If reading is infinity, go to next step. If reading is not infinity, repair short circuit between MAF sensor connector and PCM connector. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Adjust DVOM to 20 VDC range. Using DVOM, check voltage between MAF sensor connector terminal No. 1 and ground. Check voltage between MAF sensor connector terminal No. 2 and ground. DVOM should indicate zero volts for both readings. If voltage is as specified, go to next step. If voltage is not as specified, repair short to voltage as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  7. At this point in test procedure, wiring for MAF sensor was verified to be functional. Go to next step.
  8. Inspect Throttle Valve Control Module (TVCM) 8-pin connector for looseness and/or corrosion. Repair connector as necessary. If connector was okay, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  9. Turn ignition off. Disconnect TVCM 8-pin connector. Turn ignition on. Using DVOM, check resistance between specified terminals: TVCM connector terminals No. 3 and 7. TVCM connector terminals No. 4 and 7. Voltage should be 9-14.5 volts for first measurement. Voltage should be 4-6 volts for SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  10. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 3 and test box socket 69. TVCM connector terminal No. 4 and test box socket 62. TVCM connector terminal No. 7 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  11. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 7 and test box socket 69. TVCM connector terminal No. 7 and test box socket 62. TVCM connector terminal No. 4 and test box socket 67. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  12. At this point in test procedure, wiring for MAF sensor and TVCM was verified to be functional. Replace MAF sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If DTC returns, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1176/17584: HO2S CORRECTION BEHIND CATALYST LIMIT ATTAINED (BANK 1)

Note. VAG 1551 is necessary to diagnose this code.

  1. Inspect intake air system for leaks. Repair as necessary. If intake air system is not leaking, go to next step. If intake air system was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. VAG 1551 is necessary to continue diagnosing this code. VAG 1551 is used to check aging of HO2S (response time) located before passenger side 3-way catalytic converter, HO2S heater located behind passenger side 3-way catalytic converter and HO2S located behind passenger side 3-way catalytic converter. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1177/17585: HO2S CORRECTION BEHIND CATALYST LIMIT ATTAINED (BANK 2)

Note. VAG 1551 is necessary to diagnose this code.

  1. Inspect intake air system for leaks. Repair as necessary. If intake air system is not leaking, go to next step. If intake air system was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. VAG 1551 is necessary to continue diagnosing this code. VAG 1551 is used to check aging of HO2S (response time) located before driver side 3-way catalytic converter, HO2S heater located behind driver side 3-way catalytic converter and HO2S located behind driver side 3-way catalytic converter. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1196/17604: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 27. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1197/17605: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 2, SENSOR 1)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located before driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 27. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1198/17606: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind passenger side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 28. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1199/17607: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 2, SENSOR 2)

  1. Inspect Heated Oxygen Sensor (HO2S) connector for looseness and/or corrosion. HO2S is located behind driver side 3-way catalytic converter. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Check HO2S heater fuse. Replace if necessary. Ensure engine coolant temperature is at least 176°F (80°C). Turn ignition off. Disconnect HO2S connector. Using a DVOM, check resistance between HO2S connector (sensor side) terminals No. 1 and 2. Resistance should be 0-19.9 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace HO2S. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Turn ignition on. Using a DVOM, check voltage between HO2S connector (harness side) terminals No. 1 and 2. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check voltage between HO2S connector (harness side) terminal No. 1 and ground. Voltage should be 11-14.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, connect leads between HO2S connector (harness side) terminal No. 2 and battery positive terminal. Voltage should be 11-14.5 volts or voltage may be switching 0-12 volts. Either voltage reading is acceptable. If voltage is not within specification, go to next step. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between HO2S connector (harness side) terminals and specified test box sockets: HO2S connector terminal No. 2 and test box socket 28. Resistance should be 1.5 ohms or less. If resistance is within specification, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1213-18/17621-26: CYLINDER NO. 1-6 FUEL INJECTOR CIRCUIT SHORT TO B+

Note. Before performing test procedure, ensure fuse for fuel injectors is okay. Check engine speed sensor. Check fuel pump relay.

  1. Disconnect No. 1 fuel injector electrical connector. Connect a noid light to No. 1 fuel injector electrical connector (harness side). Disconnect No. 2-6 fuel injector electrical connectors. Briefly crank engine starter and observe noid light. Noid light should flicker. Repeat test for fuel injectors No. 2-6.
  2. If noid light flickers, go to next step. If noid light does not flicker, turn ignition off. Connect VAG 1598/22 test box to PCM harness connector. Using a DVOM, measure resistance between the following terminals: Fuel injector No. 1 harness connector terminal No. 2 and test box socket 73. Fuel injector No. 2 harness connector terminal No. 2 and test box socket 80. Fuel injector No. 3 harness connector terminal No. 2 and test box socket 58. Fuel injector No. 4 harness connector terminal No. 2 and test box socket 65. Fuel injector No. 5 harness connector terminal No. 2 and test box socket 72. Fuel injector No. 6 harness connector terminal No. 2 and test box socket 79. Resistance specification is 1.5 ohms or less. If resistance is not 1.5 ohms or less, go to next step.
  3. Using a DVOM, check wiring for an open between suspect fuel injector connector terminal No. 1 and relay panel. Maximum allowable resistance is 15 ohms. See WIRING DIAGRAMS article. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check resistance between suspect fuel injector harness connector terminals. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, check resistance between fuel injector terminals. Resistance should be 13.5-15.5 ohms. If resistance is not within specification, replace fuel injector. If resistance is within specification, check if PCM is triggering circuit. This requires VAG 1551 scan tool. Follow manufacturer's instructions.

DTC P1225-30/17633-38: CYLINDER NO. 1-6 FUEL INJECTOR CIRCUIT SHORT TO GROUND

Note. Before performing test procedure, ensure fuse for fuel injectors is okay. Check engine speed sensor. Check fuel pump relay.

  1. Disconnect No. 1 fuel injector electrical connector. Connect a noid light to No. 1 fuel injector electrical connector (harness side). Disconnect No. 2-6 fuel injector electrical connectors. Briefly crank engine starter and observe noid light. Noid light should flicker. Repeat test for fuel injectors No. 2-6.
  2. If noid light flickers, go to next step. If noid light does not flicker, turn ignition off. Connect VAG 1598/22 test box to PCM harness connector. Using a DVOM, measure resistance between the following terminals: Fuel injector No. 1 harness connector terminal No. 2 and test box socket 73. Fuel injector No. 2 harness connector terminal No. 2 and test box socket 80. Fuel injector No. 3 harness connector terminal No. 2 and test box socket 58. Fuel injector No. 4 harness connector terminal No. 2 and test box socket 65. Fuel injector No. 5 harness connector terminal No. 2 and test box socket 72. Fuel injector No. 6 harness connector terminal No. 2 and test box socket 79. Resistance specification is 1.5 ohms or less. If resistance is not 1.5 ohms or less, go to next step.
  3. Using a DVOM, check wiring for an open between suspect fuel injector connector terminal No. 1 and relay panel. Maximum allowable resistance is 15 ohms. See WIRING DIAGRAMS article. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check resistance between suspect fuel injector harness connector terminals. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, check resistance between fuel injector terminals. Resistance should be 13.5-15.5 ohms. If resistance is not within specification, replace fuel injector. If resistance is within specification, check if PCM is triggering circuit. This requires VAG 1551 scan tool. Follow manufacturer's instructions.

DTC P1237-42/17645-50: CYLINDER NO. 1-6 FUEL INJECTOR OPEN CIRCUIT

Note. Before performing test procedure, ensure fuse for fuel injectors is okay. Check engine speed sensor. Check fuel pump relay.

  1. Disconnect No. 1 fuel injector electrical connector. Connect a noid light to No. 1 fuel injector electrical connector (harness side). Disconnect No. 2-6 fuel injector electrical connectors. Briefly crank engine starter and observe noid light. Noid light should flicker. Repeat test for fuel injectors No. 2-6.
  2. If noid light flickers, go to next step. If noid light does not flicker, turn ignition off. Connect VAG 1598/22 test box to PCM harness connector. Using a DVOM, measure resistance between the following terminals: Fuel injector No. 1 harness connector terminal No. 2 and test box socket 73. Fuel injector No. 2 harness connector terminal No. 2 and test box socket 80. Fuel injector No. 3 harness connector terminal No. 2 and test box socket 58. Fuel injector No. 4 harness connector terminal No. 2 and test box socket 65. Fuel injector No. 5 harness connector terminal No. 2 and test box socket 72. Fuel injector No. 6 harness connector terminal No. 2 and test box socket 79. Resistance specification is 1.5 ohms or less. If resistance is not 1.5 ohms or less, go to next step.
  3. Using a DVOM, check wiring for an open between suspect fuel injector connector terminal No. 1 and relay panel. Maximum allowable resistance is 15 ohms. See WIRING DIAGRAMS article. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using a DVOM, check resistance between suspect fuel injector harness connector terminals. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, check resistance between fuel injector terminals. Resistance should be 13.5-15.5 ohms. If resistance is not within specification, replace fuel injector. If resistance is within specification, check if PCM is triggering circuit. This requires VAG 1551 scan tool. Follow manufacturer's instructions.

DTC P1250/17658: FUEL LEVEL TOO LOW

Note. For malfunctions which may be caused by a low fuel volume (i.e., combustion misfire) a low fuel DTC P1250 is also stored when less than 2 gallons of fuel is remaining.

Check wiring between instrument cluster and Powertrain Control Module (PCM). Check signal from fuel gauge and check fuel gauge. See WIRING DIAGRAMS article. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

  1. Inspect knock sensor 3-pin connector for looseness and/or corrosion. Knock sensor No. 1 is located at right side of engine, under intake manifold near front of engine. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect engine speed sensor 3-pin connector. Using DVOM, check resistance between specified knock sensor 3-pin connector (sensor side) terminals. Knock sensor terminals No. 1 and 2. Knock sensor terminals No. 1 and 3. Knock sensor terminals No. 2 and 3. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, replace knock sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 1 and test box socket 68. Knock sensor connector terminal No. 2 and test box socket 67. Knock sensor connector terminal No. 3 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 2 and test box socket 68. Knock sensor connector terminal No. 3 and test box socket 68. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Loosen knock sensor No. 1 and re-tighten to 15 ft. lbs. (20 N.m). Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If DTC is still in memory, replace faulty knock sensor No. 1. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  1. Inspect knock sensor 3-pin connector for looseness and/or corrosion. Knock sensor No. 2 is located at left side of engine, under intake manifold near rear of engine. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect engine speed sensor 3-pin connector. Using DVOM, check resistance between specified knock sensor 3-pin connector (sensor side) terminals. Knock sensor terminals No. 1 and 2. Knock sensor terminals No. 1 and 3. Knock sensor terminals No. 2 and 3. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, replace knock sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 1 and test box socket 60. Knock sensor connector terminal No. 2 and test box socket 67. Knock sensor connector terminal No. 3 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair wiring harness open as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between knock sensor connector (harness side) terminals and specified test box sockets: Knock sensor connector terminal No. 2 and test box socket 60. Knock sensor connector terminal No. 3 and test box socket 60. Resistance should be infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair wiring harness short as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Loosen knock sensor No. 2 and re-tighten to 15 ft. lbs. (20 N.m). Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If DTC is still in memory, replace faulty knock sensor No. 2. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1337/17745 & P1338/17746: CAMSHAFT POSITION SENSOR FAILURE (BANK 1)

  1. Inspect Camshaft Position (CMP) sensor connector for looseness and/or corrosion. CMP sensor is located at front of passenger side cylinder head. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect Camshaft Position (CMP) sensor 3-pin connector. Turn ignition on. Connect a DVOM between CMP sensor connector (harness side) terminals No. 1 and 3.
  3. Voltage should be 9-14.5 volts. If voltage is within specification, go to next step. If voltage is not to specification, repair wiring harness between CMP sensor connector and Powertrain Control Module (PCM). See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Turn ignition off. Connect VAG 1598/22 test box to PCM harness connector. Using a DVOM, measure resistance between CMP sensor connector (harness side) and the following terminals: CMP sensor connector (harness side) terminal No. 1 and test box socket 11. CMP sensor connector (harness side) terminal No. 2 and test box socket 44. CMP sensor connector (harness side) terminal No. 3 and test box socket 67. Resistance specification is 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open in wiring harness as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, measure resistance between CMP sensor connector (harness side) and the following terminals: CMP sensor connector (harness side) terminal No. 3 and test box socket 44. CMP sensor connector (harness side) terminal No. 3 and test box socket 11. CMP sensor connector (harness side) terminal No. 2 and test box socket 11. Resistance specification is infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. If wiring is okay and voltage between CMP connector (harness side) terminals No. 1 and 3 is okay, replace CMP sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  7. If wiring is okay, but there is no voltage between CMP connector (harness side) terminals No. 1 and 3, replace PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1386/17794: PCM KNOCK CONTROL CIRCUIT ERROR

No test procedure is required for this fault code. Replace Powertrain Control Module (PCM). See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1391/17799 & P1392/17800: CAMSHAFT POSITION SENSOR FAILURE (BANK 2)

  1. Inspect Camshaft Position (CMP) sensor connector for looseness and/or corrosion. CMP sensor is located at rear of driver side cylinder head. Repair sensor connector as necessary. If sensor connector was not repaired, go to next step. If sensor connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect Camshaft Position (CMP) sensor 3-pin connector. Turn ignition on. Connect a DVOM between CMP sensor connector (harness side) terminals No. 1 and 3.
  3. Voltage should be 9-14.5 volts. If voltage is within specification, go to next step. If voltage is not to specification, repair wiring harness between CMP sensor connector and Powertrain Control Module (PCM). See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Turn ignition off. Connect VAG 1598/22 test box to PCM harness connector. Using a DVOM, measure resistance between CMP sensor connector (harness side) and the following terminals: CMP sensor connector (harness side) terminal No. 1 and test box socket 11. CMP sensor connector (harness side) terminal No. 2 and test box socket 76. CMP sensor connector (harness side) terminal No. 3 and test box socket 67. Resistance specification is 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open in wiring harness as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using a DVOM, measure resistance between CMP sensor connector (harness side) and the following terminals: CMP sensor connector (harness side) terminal No. 3 and test box socket 76. CMP sensor connector (harness side) terminal No. 3 and test box socket 11. CMP sensor connector (harness side) terminal No. 2 and test box socket 11. Resistance specification is infinity. If resistance is infinity, go to next step. If resistance is not infinity, repair short in wiring harness as necessary. See WIRING DIAGRAMS article. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. If wiring is okay and voltage between CMP connector (harness side) terminals No. 1 and 3 is okay, replace CMP sensor. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  7. If wiring is okay, but there is no voltage between CMP connector (harness side) terminals No. 1 and 3, replace PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1410/17818: TANK VENTILATION VALVE CIRCUIT SHORT TO B+

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check EVAP canister purge regulator valve utilizing Output Diagnostic Test Mode (DTM). Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1421/17829 & P1422/17830: SECONDARY AIR INJECTION CIRCUIT FAILURE

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check secondary air injection system utilizing Output Diagnostic Test Mode (DTM). Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1425/17833 & P1426/17834: TANK VENTILATION VALVE CIRCUIT FAILURE

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check EVAP canister purge regulator valve utilizing Output Diagnostic Test Mode (DTM). Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1432-36/17840-44: SECONDARY AIR INJECTION SYSTEM FAILURE

VAG 1551 is necessary to diagnose this code. VAG 1551 is used to check secondary air injection system utilizing Output Diagnostic Test Mode (DTM). Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1471-73/17879-81: EVAP EMISSION LEAK DETECTION PUMP CIRCUIT FAILURE

  1. Disconnect 3-pin EVAP Leak Detection Pump (LDP) connector. LDP connector is located behind left rear wheel housing liner. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 1 and 3. Resistance should be 640-720 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 2 and 3. Resistance should be 17.5-27.5 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Connect VAG 1527B LED voltage tester between LDP connector (harness side) terminal No. 3 and ground. Start engine and idle. LED voltage tester should illuminate. If LED voltage tester illuminates, system is functioning properly. Test is complete. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. If LED voltage tester does not illuminate, check fuse for LDP. Inspect wiring between LPD connector (harness side) terminal No. 3 and fuse for an open circuit. Maximum allowable resistance is .5 ohms. Check fuel pump relay operation. See SYSTEM & COMPONENT TESTING article. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1476/17884 & P1477/17885: EVAP EMISSION LEAK DETECTION PUMP CIRCUIT FAILURE

  1. Disconnect 3-pin EVAP Leak Detection Pump (LDP) connector. LDP connector is located behind left rear wheel housing liner. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 1 and 3. Resistance should be 640-720 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Using a DVOM, measure resistance between LDP connector (component side) terminals No. 2 and 3. Resistance should be 17.5-27.5 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace LDP. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Connect VAG 1527B LED voltage tester between LDP connector (harness side) terminal No. 3 and ground. Start engine and idle. LED voltage tester should illuminate. If LED voltage tester illuminates, system is functioning properly. Test is complete. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. If LED voltage tester does not illuminate, check fuse for LDP. Inspect wiring between LPD connector (harness side) terminal No. 3 and fuse for an open circuit. Maximum allowable resistance is .5 ohms. Check fuel pump relay operation. See SYSTEM & COMPONENT TESTING article. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1500-02/17908-10: FUEL PUMP RELAY CIRCUIT FAILURE

Check fuel pump relay operation. See SYSTEM & COMPONENT TESTING article. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1505/17913: TP SWITCH CIRCUIT FAILURE

  1. Inspect Throttle Valve Control Module (TVCM) 8-pin connector for looseness and/or corrosion. Repair connector as necessary. If connector was okay, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect TVCM 8-pin connector. Turn ignition on. Using DVOM, check resistance between specified terminals: TVCM connector terminals No. 3 and 7. TVCM connector terminals No. 4 and 7. Voltage should be 9-14.5 volts for first measurement. Voltage should be 4-6 volts for second measurement. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 3 and test box socket 69. TVCM connector terminal No. 4 and test box socket 62. TVCM connector terminal No. 7 and test box socket 67. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 7 and test box socket 69. TVCM connector terminal No. 7 and test box socket 62. TVCM connector terminal No. 4 and test box socket 67. Resistance should be infinity. If resistance is infinity, replace faulty PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1512/17920 & P1515-16/17923-24: INTAKE MANIFOLD CHANGE-OVER VALVE CIRCUIT FAILURE

  1. Inspect intake manifold change-over valve connector for looseness and/or corrosion. Intake manifold change-over valve is located near Throttle Valve Control Module (TVCM) at rear top of engine. Intake manifold change-over valve solenoid is located at left front of engine under ignition coils. Repair connector as necessary. If connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Start engine. Increase engine speed to more than 4500 RPM. Intake manifold change-over valve solenoid should be actuated. If solenoid is not actuated, go to next step. If solenoid is actuated, check vacuum system for leaks and verify ease of mechanical movement for change-over valve. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Disconnect intake manifold change-over valve solenoid electrical connector. Using DVOM, check valve resistance. Measure resistance across valve terminals. Resistance should be 25-35 ohms. If resistance is within specification, go to next step. If resistance is not with specification, replace intake manifold change-over valve. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  4. Check intake manifold change-over valve fuse. Replace if required. Connect VAG 1527B LED voltage tester between solenoid harness connector (harness side) terminals. Operate starter motor. LED voltage tester should illuminate. If LED voltage tester does not illuminate, go to next step. If LED voltage tester illuminates, go to step 6 .
  5. Inspect wiring between solenoid connector (harness side) terminal No. 1 and fuse for an open circuit. Maximum resistance is one ohm. If resistance is within specification, go to next step. If resistance is not within specification, repair open circuit as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  6. VAG 1551 is necessary to continue diagnosing this code. VAG 1551 is used to check signal for intake manifold change-over valve. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1519/17927 & P1522/17930: INTAKE CAMSHAFT CONTROL FAILURE

  1. Inspect suspect Camshaft Position Sensor (CMP) connector for looseness and/or corrosion. CMP sensor for bank 1 is located at front of passenger side cylinder head. CMP sensor for bank 2 is located at rear of driver side cylinder head. Repair connector as necessary. If connector was not repaired, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Disconnect suspect CMP sensor connector. Using DVOM, check CMP sensor resistance. Measure resistance across sensor terminals. Resistance should be 10-18 ohms. If resistance is within specification, go to next step. If resistance is not with specification, replace CMP sensor. Erase DTC memory and test drive vehicle.
  3. Connect VAG 1527B LED voltage tester between CMP sensor harness connector (harness side) terminal No. 1 and battery positive terminal. Crank engine for several seconds (engine may start). LED voltage tester should illuminate. If LED voltage tester does not illuminate, go to next step. If LED voltage tester illuminates, go to step 5 .
  4. Inspect wiring between CMP sensor harness connector (harness side) terminal No. 1 and fuse for an open circuit. Repair as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. VAG 1551 is necessary to continue diagnosing this code. VAG 1551 is used to check signal for camshaft adjustment. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1543-45/17951-53 & P1558/17966: TP SENSOR CIRCUIT FAILURE

  1. Inspect Throttle Valve Control Module (TVCM) 8-pin connector for looseness and/or corrosion. Throttle drive and angle sensor are located inside TVCM. Repair connector as necessary. If connector was okay, go to next step. If connector was repaired, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Throttle valve must be closed. Cruise control must be properly adjusted. Power supply for TVCM must be okay. Engine coolant temperature is at least 176°F (80°C). Automatic transmission must be in Park or Neutral. Go to next step.
  3. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between specified test box sockets: Test box sockets 59 and 66. Resistance should be 3-200 ohms. If resistance is within specification, go to step 5 . If resistance is not within specification, go to next step.
  4. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 1 and test box socket 66. TVCM connector terminal No. 2 and test box socket 59. TVCM connector terminal No. 7 and test box socket 67. TVCM connector terminal No. 8 and test box socket 74. Resistance should be 1.5 ohms or less. If resistance is within specification, go to next step. If resistance is not within specification, repair open wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  5. Using DVOM, check resistance between TVCM connector terminals and specified test box sockets: TVCM connector terminal No. 1 and test box socket 59. TVCM connector terminal No. 1 and test box socket 74. TVCM connector terminal No. 1 and test box socket 67. TVCM connector terminal No. 2 and test box socket 67. TVCM connector terminal No. 2 and test box socket 74. TVCM connector terminal No. 7 and test box socket 74. Resistance should be infinity. If resistance is infinity, perform Throttle Valve Control Module (TVCM) adaptation. VAG 1551 is necessary to perform TVCM adaptation. Follow test equipment manufacturer's instructions for VAG 1551 operation. Also verify PCM coding. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article. If resistance is not infinity, repair short in wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1559/17967: IDLE SPEED CONTROL/THROTTLE POSITION ADAPTATION FAILURE

Note. Adaptation was interrupted by application of throttle or by starting engine.

Perform Throttle Valve Control Module (TVCM) adaptation. VAG 1551 is necessary to perform TVCM adaptation. Follow test equipment manufacturer's instructions for VAG 1551 operation.

DTC P1560/17968: MAXIMUM ENGINE SPEED EXCEEDED

Repair engine mechanical failure as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1564/17972: PCM POWER SUPPLY VOLTAGE FAILURE

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check voltage between test box sockets No. 2 and 3, then 1 and 2.
  2. Voltage should be 10-14.5 volts for each reading. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1565/17973: IDLE SPEED CONTROL/THROTTLE POSITION FAILURE

Note. Lower specification not attained during adaptation. May be caused by incorrectly adjusted throttle cable or dirty throttle body.

Clean throttle body as necessary. Check throttle cable adjustment. After repairs. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1600/18008 & P1602/18010: PCM POWER SUPPLY VOLTAGE FAILURE

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using DVOM, check voltage between test box sockets No. 2 and 3, then 1 and 2.
  2. Voltage should be 10-14.5 volts for each reading. If voltage is within specification, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article. If voltage is not within specification, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1606/18014: ROUGH ROAD SIGNAL DETECTED

Note. If Anti-Lock Brake System (ABS) module senses a spinning wheel, it produces a rough road signal. When Powertrain Control Module (PCM) sees a rough road signal, misfire recognition is turned off. If a misfire DTC is stored, it is a subsequent malfunction which may be disregarded.

Note. This DTC may be stored if emission testing a front wheel drive vehicle with ABS/EDL, and only front wheels are turning while rear wheels are stationary.

  1. VAG 1551 is necessary to diagnose this code. Ensure PCM coding is correct. See PCM CODING in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using a DVOM, check for a short or open circuit between PCM and ABS module. See WIRING DIAGRAMS article. Repair as necessary. If wiring is okay, go to next step. If wiring is not okay, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Replace ABS module. If DTC occurs again after replacing ABS module, replace PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1612/18020: PCM INCORRECT CODING

Code PCM correctly. See PCM CODING in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1624/18032: MIL REQUEST SIGNAL ACTIVE

Check Transmission Control Module (TCM) DTC memory. See appropriate ELECTRONIC CONTROLS article in TRANSMISSIONS. Repair as necessary.

DTC P1626/18034: CONTROLLER AREA NETWORK (CAN) FAILURE

Note. All Controller Area Network (CAN) signals are carried by 2 wires between PCM and Transmission Control Module (TCM).

  1. VAG 1551 is necessary to diagnose this code. Using VAG 1551, check TCM Diagnostic Trouble Codes (DTCs). If a TCM DTC is also stored for CAN, go to next step. If a TCM DTC for CAN is not stored, erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  2. Turn ignition off. Disconnect Powertrain Control Module (PCM) connectors. Connect VAG 1598/22 test box to PCM wiring harness. Using a DVOM, check for a short or open circuit between test box sockets 29 and 41 to TCM. See WIRING DIAGRAMS article. Repair as necessary. If wiring is okay, go to next step. If wiring is not okay, repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.
  3. Replace TCM. If DTC occurs again after replacing TCM, replace PCM. See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1640/18048: INTERNAL PCM (EEPROM) ERROR

No test procedure is required for this fault code. Replace Powertrain Control Module (PCM). See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1681/18089: PCM PROGRAMMING NOT FINISHED

No test procedure is required for this fault code. Replace Powertrain Control Module (PCM). See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.

DTC P1690/18098: MIL FAILURE

Using a DVOM, check wiring for an open or short between Powertrain Control Module (PCM) and Malfunction Indicator Light (MIL). See WIRING DIAGRAMS article. Repair wiring harness as necessary. Erase DTC memory. See CLEARING CODES in SELF-DIAGNOSTICS - INTRODUCTION article.

See also:
• P0102
• P0112
• P0116
• P0121
• P0130
• P0133
• P0134
• P0136
• P0150
• P0153
• P0154
• P0156
• P0300
• P0321
• P0327
• P0411
• P0422
• P0432
• P0441
• P0442
• P0501
• P0506
• P0601
• P1102
• P1105
• P1107
• P1110
• P1127
• P1128
• P1129
• P1130
• P1136
• P1137
• P1138
• P1139
• P1141
• P1176
• P1177
• P1196
• P1197
• P1198
• P1199
• P1213
• P1225
• P1237
• P1250
• P1337
• P1386
• P1391
• P1410
• P1421
• P1425
• P1432
• P1471
• P1476
• P1500
• P1505
• P1512
• P1519
• P1543
• P1559
• P1560
• P1564
• P1565
• P1600
• P1606
• P1612
• P1624
• P1626
• P1640
• P1681
• P1690

More articles — Engine Performance