No test procedure is required for this fault code. Replace Powertrain Control Module (PCM). See PCM REPLACEMENT in SELF-DIAGNOSTICS - INTRODUCTION article.
Home/Audi/A4/Audi A4 B5 facelift (1999-2001)/Repair manual/Testing & Diagnostics/DTC P1640/18048: INTERNAL PCM (EEPROM) ERROR
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls - Basic Diagnostic Procedures: Diagnosis
- Engine Controls - Basic Diagnostic Procedures: Other
- Engine Controls - Self-Diagnostics - Introduction: Overview
- Engine Controls - Self-Diagnostics - Introduction: Diagnosis
- Engine Controls - Self-Diagnostics - Introduction: Removal & Installation
- Engine Controls - Self-Diagnostics - Introduction: Other
- Engine Controls - Self-Diagnostics - 2.8L: Overview
- Engine Controls - Self-Diagnostics - 2.8L: Diagnosis
- DTC P0102/16486 & P0103/16487: MAF CIRCUIT FAILURE
- DTC P0112/16496 & P0113/16497: IAT SENSOR CIRCUIT FAILURE
- DTC P0116/16500, P0117/16501 & P0118/16502: ECT SENSOR CIRCUIT FAILURE
- DTC P0121/16505, P0122/16506 & P0123/16507: TP SENSOR CIRCUIT FAILURE
- DTC P0130/16514, P0131/16515 & P0132/16516: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 1)
- DTC P0133/16517: HO2S SLOW RESPONSE (BANK 1, SENSOR 1)
- DTC P0134/16518: HO2S NO ACTIVITY DETECTED (BANK 1, SENSOR 1)
- DTC P0136-38/16520-22 & P0140/16524: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 2)
- DTC P0150-52/16534-36: HO2S CIRCUIT FAILURE (BANK 2, SENSOR 1)
- DTC P0153/16537: HO2S SLOW RESPONSE (BANK 2, SENSOR 1)
- DTC P0154/16538: HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 2, SENSOR 1)
- DTC P0156-60/16540-44: HO2S CIRCUIT FAILURE (BANK 2, SENSOR 2)
- DTC P0300-06/16684-90: CYLINDER MISFIRE DETECTED
- DTC P0321/16705 & P0322/16706: IGN/DIST. CIRCUIT FAILURE
- Engine Controls - Self-Diagnostics - 2.8L: Other
- DTC P0411/16795: SECONDARY AIR INJECTION SYSTEM FAILURE
- DTC P0422/16806: MAIN CATALYST EFFICIENCY BELOW THRESHOLD (BANK 1)
- DTC P0432/16816: MAIN CATALYST EFFICIENCY BELOW THRESHOLD (BANK 2)
- DTC P0441/16825: EVAP SYSTEM FAILURE
- DTC P0442/16826 & P0455/16839: EVAP SYSTEM FAILURE
- DTC P0501/16885: VEHICLE SPEED SENSOR FAILURE
- DTC P0506/16890 & P0507/16891: IDLE CONTROL SYSTEM FAILURE
- DTC P0601/16985 & P0604/16988: PCM FAILURE
- DTC P1102/17510: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 1)
- DTC P1105/17513: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 2)
- DTC P1107/17515: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 2, SENSOR 1)
- DTC P1110/17518: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 2, SENSOR 2)
- DTC P1127/17535: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO RICH (BANK 1)
- DTC P1128/17536: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO LEAN (BANK 1)
- DTC P1129/17537: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO RICH (BANK 2)
- DTC P1130/17538: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO LEAN (BANK 2)
- DTC P1136/17544: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO LEAN (BANK 1)
- DTC P1137/17545: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO RICH (BANK 1)
- DTC P1138/17546: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO LEAN (BANK 2)
- DTC P1139/17547: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO RICH (BANK 2)
- DTC P1141/17549: LOAD CALCULATION CROSS CHECK RANGE/PERFORMANCE
- DTC P1176/17584: HO2S CORRECTION BEHIND CATALYST LIMIT ATTAINED (BANK 1)
- DTC P1177/17585: HO2S CORRECTION BEHIND CATALYST LIMIT ATTAINED (BANK 2)
- DTC P1196/17604: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 1)
- DTC P1197/17605: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 2, SENSOR 1)
- DTC P1198/17606: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 2)
- DTC P1199/17607: HO2S HEATING CIRCUIT ELECTRICAL FAILURE (BANK 2, SENSOR 2)
- DTC P1213-18/17621-26: CYLINDER NO. 1-6 FUEL INJECTOR CIRCUIT SHORT TO B+
- DTC P1225-30/17633-38: CYLINDER NO. 1-6 FUEL INJECTOR CIRCUIT SHORT TO GROUND
- DTC P1237-42/17645-50: CYLINDER NO. 1-6 FUEL INJECTOR OPEN CIRCUIT
- DTC P1250/17658: FUEL LEVEL TOO LOW
- DTC P1337/17745 & P1338/17746: CAMSHAFT POSITION SENSOR FAILURE (BANK 1)
- DTC P1386/17794: PCM KNOCK CONTROL CIRCUIT ERROR
- DTC P1391/17799 & P1392/17800: CAMSHAFT POSITION SENSOR FAILURE (BANK 2)
- DTC P1410/17818: TANK VENTILATION VALVE CIRCUIT SHORT TO B+
- DTC P1421/17829 & P1422/17830: SECONDARY AIR INJECTION CIRCUIT FAILURE
- DTC P1425/17833 & P1426/17834: TANK VENTILATION VALVE CIRCUIT FAILURE
- DTC P1432-36/17840-44: SECONDARY AIR INJECTION SYSTEM FAILURE
- DTC P1471-73/17879-81: EVAP EMISSION LEAK DETECTION PUMP CIRCUIT FAILURE
- DTC P1476/17884 & P1477/17885: EVAP EMISSION LEAK DETECTION PUMP CIRCUIT FAILURE
- DTC P1500-02/17908-10: FUEL PUMP RELAY CIRCUIT FAILURE
- DTC P1505/17913: TP SWITCH CIRCUIT FAILURE
- DTC P1512/17920 & P1515-16/17923-24: INTAKE MANIFOLD CHANGE-OVER VALVE CIRCUIT FAILURE
- DTC P1519/17927 & P1522/17930: INTAKE CAMSHAFT CONTROL FAILURE
- DTC P1543-45/17951-53 & P1558/17966: TP SENSOR CIRCUIT FAILURE
- DTC P1559/17967: IDLE SPEED CONTROL/THROTTLE POSITION ADAPTATION FAILURE
- DTC P1560/17968: MAXIMUM ENGINE SPEED EXCEEDED
- DTC P1564/17972: PCM POWER SUPPLY VOLTAGE FAILURE
- DTC P1565/17973: IDLE SPEED CONTROL/THROTTLE POSITION FAILURE
- DTC P1600/18008 & P1602/18010: PCM POWER SUPPLY VOLTAGE FAILURE
- DTC P1606/18014: ROUGH ROAD SIGNAL DETECTED
- DTC P1612/18020: PCM INCORRECT CODING
- DTC P1624/18032: MIL REQUEST SIGNAL ACTIVE
- DTC P1626/18034: CONTROLLER AREA NETWORK (CAN) FAILURE
- DTC P1640/18048: INTERNAL PCM (EEPROM) ERROR
- DTC P1681/18089: PCM PROGRAMMING NOT FINISHED
- DTC P1690/18098: MIL FAILURE
- Engine Controls - Self-Diagnostics - 1.8L Turbo: Overview
- Engine Controls - Self-Diagnostics - 1.8L Turbo: Diagnosis
- DTC P0102/16486 & P0103/16487: MAF CIRCUIT FAILURE
- DTC P0107/16491 & P0108/16492: MAP SENSOR CIRCUIT FAILURE
- DTC P0112/16496 & P0113/16497: IAT SENSOR CIRCUIT FAILURE
- DTC P0116/16500, P0117/16501 & P0118/16502: ECT SENSOR CIRCUIT FAILURE
- DTC P0121/16505, P0122/16506 & P0123/16507: TP SENSOR CIRCUIT FAILURE
- DTC P0130/16514, P0131/16515 & P0132/16516: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 1)
- DTC P0133/16517: HO2S SLOW RESPONSE (BANK 1, SENSOR 1)
- DTC P0134/16518: HO2S NO ACTIVITY DETECTED (BANK 1, SENSOR 1)
- DTC P0136/16520, P0137/16521, P0138/16522 & P0140/16524: HO2S CIRCUIT FAILURE (BANK 1, SENSOR 2)
- DTC P0300/16684, P0301/16685, P0302/16686, P0303/16687 & P0304/16688: CYLINDER MISFIRE DETECTED
- DTC P0321/16705 & P0322/16706: IGN/DIST. CIRCUIT FAILURE
- Engine Controls - Self-Diagnostics - 1.8L Turbo: Other
- DTC P0422/16806: MAIN CATALYST FAILURE (BANK 1)
- DTC P0441/16825: EVAP SYSTEM FAILURE
- DTC P0442/16826 & P0455/16839: EVAP SYSTEM FAILURE
- DTC P0501/16885: VEHICLE SPEED SENSOR FAILURE
- DTC P0506/16890 & P0507/16891: IDLE CONTROL SYSTEM FAILURE
- DTC P0560/16944, P0562/16946 & P0563/16947: SYSTEM VOLTAGE FAILURE
- DTC P0601/16985 & P0604/16988: PCM FAILURE
- DTC P1102/17510: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 1)
- DTC P1105/17513: HO2S HEATING CIRCUIT SHORT TO B+ (BANK 1, SENSOR 2)
- DTC P1127/17535: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO RICH (BANK 1)
- DTC P1128/17536: LONG TERM FUEL TRIM MULTIPLICATIVE SYSTEM TOO LEAN (BANK 1)
- DTC P1136/17544: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO LEAN (BANK 1)
- DTC P1137/17545: LONG TERM FUEL TRIM ADDITIVE SYSTEM TOO RICH (BANK 1)
- DTC P1176/17584: HO2S CORRECTION BEHIND CATALYST LIMIT ATTAINED (BANK 1)
- DTC P1196/17604: HO2S HEATER CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 1)
- DTC P1198/17606: HO2S HEATER CIRCUIT ELECTRICAL FAILURE (BANK 1, SENSOR 2)
- DTC P1213-16/17621-24: CYLINDER NO. 1-4 FUEL INJECTOR CIRCUIT SHORT TO B+
- DTC P1225-28/17633-36: CYLINDER NO. 1-4 FUEL INJECTOR CIRCUIT SHORT TO GROUND
- DTC P1237-40/17645-48: CYLINDER NO. 1-4 FUEL INJECTOR OPEN CIRCUIT
- DTC P1250/17658: FUEL LEVEL TOO LOW
- DTC P1337/17745 & P1338/17746: CAMSHAFT POSITION SENSOR FAILURE
- DTC P1386/17794: PCM KNOCK CONTROL CIRCUIT ERROR
- DTC P1410/17818: TANK VENTILATION VALVE CIRCUIT SHORT TO B+
- DTC P1425/17833 & P1426/17834: TANK VENTILATION VALVE FAILURE
- DTC P1471-73/17879-81 & P1475-77/17883-85: EVAP EMISSION LEAK DETECTION PUMP FAILURE
- DTC P1500-02/17908-10: FUEL PUMP RELAY CIRCUIT FAILURE
- DTC P1505/17913 & P1506/17914: CLOSED TP SENSOR SWITCH FAILURE
- DTC P1543-45/17951-53: TP SENSOR FAILURE
- DTC P1546-48/17954-56: BOOST PRESSURE CONTROL VALVE FAILURE
- DTC P1555-57/17963-65: CHARGE PRESSURE DEVIATION
- DTC P1558/17966 & P1559/17967: THROTTLE ACTUATOR/POSITION SENSOR FAILURE
- DTC P1560/17968: MAXIMUM ENGINE SPEED EXCEEDED
- DTC P1602/18010: PCM LOW VOLTAGE
- DTC P1606/18014: ROUGH ROAD SIGNAL DETECTED
- DTC P1611/18019: MIL CIRCUIT/TCM SHORT TO GROUND
- DTC P1612/18020: PCM INCORRECT CODING
- DTC P1613/18021: MIL CIRCUIT OPEN OR SHORT TO B+
- DTC P1624/18032: MIL REQUEST SIGNAL ACTIVE
- DTC P1640/18048: INTERNAL PCM (EEPROM) ERROR
- Engine Controls - Trouble Shooting - No Codes: Diagnosis
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