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Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 6 of 14 (Convertible): Other Volvo C70 I

Testing & Diagnostics 13 illustrations ~12199 words

Checking cables and connectors

Check injector connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check cable between injector terminal 2 and control module

  1. #A16 (#A16) (ECM 2310)
  2. #A34 (#A34) (ECM 2320)
  3. #A15 (#A15) (ECM 2330)
  4. #A33 (#A33) (ECM 2340)
  5. #A14 (#A14) (ECM 2350)

and power supply between system relay terminal 3 and injector terminal 1 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-404036-S29374937892011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .

Scheme 330

Scheme 330
Scheme 330

Scheme 331

Scheme 331
Scheme 331
  1. Continue Refer to «Information»(ref-404041-S33381081182011061000000)

Fault-tracing information

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

Verification

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S04299237082011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the connector

  1. Ignition off
  2. Check the injector connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Ignition on
  5. Activate the injector. A "click" should be heard when the injector is activated. If the injector is now OK, the fault was caused by poor contact in the connector. Other information To access or replace the injector, see «Injectors/pulsation dampers, replacing»(ref-404036-S31665539942011061000000) For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000) See «Contents»(ref-438291-S00903409402011120100000) .

Is the injector working?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S42405335912011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S17174928092011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Checking cables

Check cable between injector terminal 2 and control module

  1. #A16 (#A16) (ECM 2310)
  2. #A34 (#A34) (ECM 2320)
  3. #A15 (#A15) (ECM 2330)
  4. #A33 (#A33) (ECM 2340)
  5. #A14 (#A14) (ECM 2350)

for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-404036-S29374937892011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .

Scheme 332

Scheme 332
Scheme 332
  1. Continue Refer to «Information»(ref-404041-S25393551482011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S19960019512011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S05729250372011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check cable between injector terminal 2 and control module

  1. #A16 (#A16) (ECM 2310)
  2. #A34 (#A34) (ECM 2320)
  3. #A15 (#A15) (ECM 2330)
  4. #A33 (#A33) (ECM 2340)
  5. #A14 (#A14) (ECM 2350)

for an intermittent short-circuit to ground according to Short-circuit to ground, permanent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-404036-S29374937892011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S23406599222011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S13917398432011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on.
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S37181025942011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Checking for intermittent faults

  1. Activate the relevant injector. A click should be heard from the injector when it is activated.

Is the injector working?

  1. YES Refer to «Fault-tracing information»(ref-404041-S38939536802011061000000)
  2. NO Refer to «Checking the connector»(ref-404041-S11706470202011061000000)

Scheme 333

Scheme 333: Checking the connector
Scheme 333: Checking the connector
  1. Ignition off. Check the injector connector. Check for contact resistance and oxidation. Remedy as necessary. Other information To access or replace the injector, see «Injector/pulse damper, replacement»(ref-404036-S08834393832011061000000) See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .
  1. Continue Refer to «Checking the connector»(ref-404041-S07905568482011061000000)
  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Ignition on
  4. Activate the injector which caused the diagnostic trouble code (DTC) to be stored
  5. A click should be heard from the injector when it is activated. If the injector is now OK, the fault was caused by poor contact in the connector. Other information To access or replace the injector, see «Injector/pulse damper, replacement»(ref-404036-S08834393832011061000000) .

Is the injector working?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking injectors»(ref-404041-S28651680712011061000000)

Scheme 334

Scheme 334
Scheme 334

Check the cable between injector terminal 2 and the control module

  1. terminal #16 for ECM-2300
  2. terminal #34 for ECM-2310
  3. terminal #15 for ECM-2320
  4. terminal #33 for ECM-2330
  5. terminal #14 for ECM-2340.

Check for an open-circuit. Check for short-circuit to supply voltage. Check for a short-circuit to ground.

Check the resistance between terminals #1 and #2 on the injector. It should be 10-20 ohms at approximately 20 °C.

Check the cable between injector connector terminal #1 and fuse 3 in the integrated relay / fusebox in the engine compartment. Check for an open-circuit.

HINT: With the ignition on, the voltage between injector terminal 1 and ground terminal must be battery voltage.

Remedy as necessary.

Other information

  1. See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .

Scheme 335

Scheme 335
Scheme 335
  1. Continue Refer to «Verification»(ref-404041-S32732966782011061000000)

The control module has previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «Information»(ref-404041-S04573186712011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate the relevant injector. A click should be heard from the injector when it is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S39389399892011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Faulty signal

See Faulty signal

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Faulty signal

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Faulty signal

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Checking the cable and component

Check the cable between engine control module (ECM) terminal #B45 (#B55) and fuel pump (FP) relay base terminal #4. Check for an open-circuit.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. To access or replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-403954-S17347054202011061000000)
  3. For information about signals, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. See «Contents»(ref-438291-S00903409402011120100000) .

Scheme 336

Scheme 336
Scheme 336
  1. Continue Refer to «Verification»(ref-404041-S02665074712011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S33438350892011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S09102895912011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Activate the fuel pump (FP) relay. The fuel pump (FP) relay should click when it is activated.

Does the fuel injection relay click?

  1. YES Refer to «Fault-tracing information»(ref-404041-S17114797312011061000000)
  2. NO Refer to «Checking the wiring»(ref-404041-S35550368592011061000000)

The control module has previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «Information»(ref-404041-S32389621512011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate fuel pump (FP). The fuel pump should start.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S35529488362011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S00098798212011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

See Signal too high. Permanent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S26454732172011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Activate the fuel pump (FP) relay. The fuel pump (FP) relay should click when it is activated.

Does the fuel injection relay click?

  1. YES Refer to «Intermittent fault»(ref-404041-S10757217292011061000000)
  2. NO Refer to «Checking the connector»(ref-404041-S28326691122011061000000)
  1. Ignition off
  2. Check the fuel pump (FP) relay connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-403956-S41958999262011061000000)
  3. Remedy as necessary. Other information To access or replace the fuel pump (FP) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000) .
  1. Continue Refer to «Checking the connector»(ref-404041-S10881077282011061000000)
  1. Reinstall the components, reconnect the connectors etc.
  2. Ignition on
  3. Activate the fuel pump (FP) relay. The fuel pump (FP) relay should click when it is activated. If the fuel pump (FP) relay now clicks, the cause of the fault was loose connections in the connector. Remedy as necessary. Other information To access or replace the fuel pump (FP) relay, see «Replacing relays in the main fuse box and other relays in the engine compartment»(ref-438318-S26822509152011120100000) .

Does the fuel injection relay click?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking the wiring»(ref-404041-S22792371512011061000000)

Intermittent fault

Check the cable between control module terminal #45B (#B57) and fuel pump (FP) relay terminal #3 (31b). Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for an intermittent open-circuit according to Open-circuit, intermittent faults .

Remedy as necessary.

  1. Continue Refer to «Information»(ref-404041-S19291234592011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate fuel pump (FP). The fuel pump should start.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S42925578482011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S10371824142011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Checking fuel injection system

Check fuel pressure according to Checking fuel and residual pressures .

Check that the oil level is between the minimum and maximum markings. Check the viscosity of the engine oil. With the engine running, read off the adaptation value. Then plug the crankcase ventilation (with a hose clamp for example) and check the adaptation value again. The value should remain almost unchanged.

  1. Continue Refer to «Incorrect adaptation range»(ref-404041-S30150531012011061000000)

Scheme 337

Scheme 337: Incorrect adaptation range
Scheme 337: Incorrect adaptation range
  1. Engine running.
  2. Check and note which adaptation range is incorrect.

This makes it possible to start the engine later and run it in the range which caused the diagnostic trouble code (DTC).

HINT: The normal value should be between 0.90-1.10.

  1. Continue Refer to «Reset adaptations»(ref-404041-S09137331192011061000000)

Start adaptations

Start and run the engine in the faulty adaptation range until the value is stable.

Check that the adaptation value is between 0.90 - 1.10.

Certain conditions must be met for adaptation to start

  1. engine speed (RPM) > or = 600 RPM
  2. engine coolant temperature (ECT) between 80-110 °C
  3. air flow (according to chart) (see the chart below for the mass air flow parameters for an active adaptation)
  4. adaptation active=executed
  5. canister purge (CP) valve not active =0 μs.

HINT: If fuel vaporization is high, the canister purge (CP) valve is active for long periods. In this case, it may be necessary to disconnect the hose between the canister purge (CP) valve and the EVAP canister.

HINT: Parameters above level 2 can be difficult to achieve in the workshop with no load on the engine.

Mass air flow parameter level 1Above 2 g/s below 7.5 g/s
Mass air flow parameter level 2Above 7.5 g/s below 11.5 g/s
Mass air flow parameter level 3Above 11.5 g/s below 15.5 g/s
Mass air flow parameter level 4Above 15.5 g/s below 19.5 g/s
Mass air flow parameter level 5Above 19.5 g/s

Is the adaptation value between 0.90-1.10?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S28334095522011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system may occur through the canister purge (CP) valve and the power brake booster for example.

Check the fuel pressure according to Checking fuel and residual pressures .

Check the mass air flow (MAF) sensor: Read off the mass air flow at different engine speeds. See Mass air flow (MAF) sensor .

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. To access / replace the mass air flow (MAF) sensor, see «Replacing the mass air flow (MAF) sensor»(ref-438318-S20858943492011120100000) .
  1. Continue Refer to «Incorrect adaptation range»(ref-404041-S04050247442011061000000)

Incorrect adaptation range

  1. Engine running.
  2. Check and note which adaptation range is incorrect.

This makes it possible to start the engine later and run it in the range which caused the diagnostic trouble code (DTC).

HINT: The normal value should be between 0.90-1.10.

  1. Continue Refer to «Reset adaptations»(ref-404041-S40456617812011061000000)

Start and run the engine in the faulty adaptation range until the value is stable.

Check that the adaptation value is between 0.90 - 1.10.

Certain conditions must be met for adaptation to start

  1. engine speed (RPM) > or = 600 RPM
  2. engine coolant temperature (ECT) between 80-110 °C
  3. air flow (according to chart) (see the chart below for the mass air flow parameters for an active adaptation)
  4. Fuel trim active=executed
  5. Canister purge (CP) valve not active=0 μs

HINT: If fuel vaporization is high, the canister purge (CP) valve is active for long periods. In this case, it may be necessary to disconnect the hose between the canister purge (CP) valve and the EVAP canister.

HINT: Parameters above level 2 can be difficult to achieve in a workshop if there is no load on the engine.

Mass air flow parameter level 1Above 2 g/s below 7.5 g/s
Mass air flow parameter level 2Above 7.5 g/s below 11.5 g/s
Mass air flow parameter level 3Above 11.5 g/s below 15.5 g/s
Mass air flow parameter level 4Above 15.5 g/s below 19.5 g/s
Mass air flow parameter level 5Above 19.5 g/s

Is the adaptation value between 0.90 and 1.10?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S01379559422011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system .

Check fuel and residual pressure according to Checking fuel and residual pressures .

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Was a fault detected?

  1. YES Refer to «Verification»(ref-404041-S08760150772011061000000)
  2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-404041-S23056493462011061000000)

Checking mass air flow (MAF) sensor

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000) .
  1. Continue Refer to «Verification»(ref-404041-S08760150772011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S19957546472011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Lower limit

See Lower limit

See Lower limit

See Lower limit

Checking the fuel injection system

Check the induction system for air leaks. See. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

  1. Continue Refer to «Checking fuel pressure and residual pressure in the workshop»(ref-404041-S22864856172011061000000)

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor. Read off its correction factor. The value should be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. See «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000)

Scheme 338

Scheme 338
Scheme 338
  1. Continue Refer to «Verification»(ref-404041-S17813946992011061000000)

Choosing a method for taking a reading

It is possible to measure fuel pressure with the car stationary or while being driven. Residual pressure is measured with the car stationary.

For measurement while the car is being driven see Taking fuel pressure readings while driving the car .

  1. Continue Refer to «Measuring line pressure»(ref-404041-S09410800322011061000000)

Scheme 339

Scheme 339: Measuring line pressure
Scheme 339: Measuring line pressure

Scheme 340

Scheme 340
Scheme 340
  1. Connect pressure gauge according to «Connecting fuel pressure gauge»(ref-403954-S34277076412011061000000) .
  2. Remove central electrical unit cover
  3. Remove fuel pump (FP) relay (terminal 103 in central electrical unit)
  4. Connect jumper cable across relay base terminals 1 and 3
  5. Switch on ignition, fuel pump should start Read off line pressure from pressure gauge. The line pressure should be 375-395 kPa If the fuel pressure is OK, check the residual pressure. Remedy as necessary Other information For location of and to replace the pressure regulator, see «Replacing fuel pressure regulator»(ref-403954-S38648179742011061000000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-403954-S17347054202011061000000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-403955-S31180271392011061000000) . For the location of and to replace the fuel filter, see «Fuel filter, replacement»(ref-403955-S09321901802011061000000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-403954-S03914982172011061000000) .

Should the residual pressure be checked?

  1. YES Refer to «Checking residual pressure»(ref-404041-S18587071272011061000000)
  2. NO Refer to «Checking the fuel injection system»(ref-404041-S38860762932011061000000)

Checking residual pressure

  1. Switch off the ignition
  2. Reset fuel pump (FP) relay Line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information For the location of and to replace the injector, see «Injector/pulse damper, replacement»(ref-403955-S26480919062011061000000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-403954-S17347054202011061000000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-403955-S31180271392011061000000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-403954-S03914982172011061000000) .
  1. Continue Refer to «Checking the fuel injection system»(ref-404041-S38860762932011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S29904211122011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Upper limit

See Upper limit

See Upper limit

See Upper limit

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system

Check fuel and residual pressure according to Checking fuel and residual pressures

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Was a fault detected?

  1. YES Refer to «Verification»(ref-404041-S03557550072011061000000)
  2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-404041-S15826683802011061000000)

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000) .
  1. Continue Refer to «Verification»(ref-404041-S03557550072011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S23489574932011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

See Lower limit

See Lower limit

Checking for air leakage in the intake system

Check the induction system for air leaks. See. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

  1. Continue Refer to «Checking fuel pressure and residual pressure in the workshop»(ref-404041-S18533971932011061000000)

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor. Read off its correction factor. The value should be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. See «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000)
  1. Continue Refer to «Verification»(ref-404041-S26271282752011061000000)

It is possible to measure fuel pressure with the car stationary or while being driven. Residual pressure is measured with the car stationary.

For measurement while the car is being driven see Taking fuel pressure readings while driving the car .

  1. Continue Refer to «Measuring line pressure»(ref-404041-S34451852332011061000000)

Measuring line pressure

  1. Connect pressure gauge according to «Connecting fuel pressure gauge»(ref-403954-S34277076412011061000000) .
  2. Remove central electrical unit cover
  3. Remove fuel pump (FP) relay (terminal 103 in central electrical unit)
  4. Connect jumper cable across relay base terminals 1 and 3
  5. Switch on ignition, fuel pump should start Read off line pressure from pressure gauge. The line pressure should be 375-395 kPa If the fuel pressure is OK, check the residual pressure. Remedy as necessary Other information For location of and to replace the pressure regulator, see «Replacing fuel pressure regulator»(ref-403954-S38648179742011061000000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-403954-S17347054202011061000000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-403955-S31180271392011061000000) . For the location of and to replace the fuel filter, see «Fuel filter, replacement»(ref-403955-S09321901802011061000000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-403954-S03914982172011061000000) .

Should the residual pressure be checked?

  1. YES Refer to «Checking residual pressure»(ref-404041-S09779058682011061000000)
  2. NO Refer to «Checking the fuel injection system»(ref-404041-S30924418722011061000000)
  1. Switch off the ignition
  2. Reset fuel pump (FP) relay Line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information For the location of and to replace the injector, see «Injector/pulse damper, replacement»(ref-403955-S26480919062011061000000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-403954-S17347054202011061000000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-403955-S31180271392011061000000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-403954-S03914982172011061000000) .
  1. Continue Refer to «Checking the fuel injection system»(ref-404041-S30924418722011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S35306899232011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Upper limit

See Upper limit

See Upper limit

Check the induction system for air leaks. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage. Checking for air leakage in the exhaust system

Check the fuel pressure and residual pressure. Checking fuel pressure and residual pressure in the workshop

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

  1. Continue Refer to «Checking mass air flow (MAF) sensor»(ref-404041-S23666719222011061000000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. See «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000)
  1. Continue Refer to «Verification»(ref-404041-S28962972032011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S18479921472011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

See Lower limit

See Lower limit

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Start the engine and idle it for 10 minutes.

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 2 and 12

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

  1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-403955-S38455306752011061000000) .
  1. Continue Refer to «Verification»(ref-404041-S00728810812011061000000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

  1. YES Refer to «Information»(ref-404041-S31020865002011061000000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Upper limit

See Upper limit

See Upper limit

Information

There is no fault-tracing for this diagnostic fault code (DTC).

For further information on this diagnostic trouble code, see Diagnostic trouble code (DTC) information.

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-404031-S12707510902011061000000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S38412763572011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S14407507612011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking for air leakage in the exhaust system

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Scheme 341

Scheme 341: Checking for air leakage in the exhaust system
Scheme 341: Checking for air leakage in the exhaust system

Was there any air leakage?

  1. YES Refer to «Verification»(ref-404041-S37125253552011061000000)
  2. NO Refer to «Checking components and wiring»(ref-404041-S29382249692011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors. Reinstall the components
  3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-404031-S12707510902011061000000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S39850202362011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-404031-S12707510902011061000000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S09422676752011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high

See Signal too high

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-404031-S12707510902011061000000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S42280158602011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check signal cable (+) between heated oxygen sensor (HO2S) #1 and control module #A41 (#A41) and signal cable (-) between heated oxygen sensor (HO2S) #5 and control module #A42 (#A42) for an intermittent short circuit to each other according to Short-circuit to ground, intermittent faults .

Check the power supply to heated oxygen sensor (HO2S) #3 and the signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to the heated oxygen sensor (HO2S) other wiring according to Short-circuit to supply voltage, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S17490613602011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S02175277012011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

  1. YES Refer to «Verification»(ref-404041-S30923795422011061000000)
  2. NO Refer to «Checking components and wiring»(ref-404041-S06526131802011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors. Reinstall the components
  3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-404031-S12707510902011061000000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S28812521512011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-404031-S12707510902011061000000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S08924731222011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high

See Signal too high

See Signal too high

See Signal too high

See Signal too high

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-404031-S12707510902011061000000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S34789576292011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

See Signal too low. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-404031-S12707510902011061000000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S35582721022011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Control module previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «Information»(ref-404041-S00892190392011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Replacing the heated oxygen sensor

  1. Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S). See «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000) .
  1. Continue Refer to «Information»(ref-404041-S24606247512011061000000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

  1. Ignition off
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnostic is still running. Other information To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) For information about signals on 6 cylinder engines, see «Signal specification»(ref-438318-S29219213252011120100000) See «Contents»(ref-438291-S00903409402011120100000) .

Is FAULT NOT DETECTED displayed?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S33074764702011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S26323730522011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S17708139032011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S33230749572011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Control module previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «Information»(ref-404041-S05716029142011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

Replacing heated oxygen sensor

  1. Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S) according to «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  1. Continue Refer to «Information»(ref-404041-S20013942632011061000000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) and power supply between system relay #3 and heated oxygen sensor (HO2S) #3 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S20234675782011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

Checking connector

  1. Ignition off.
  2. Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-403956-S41958999262011061000000) .
  3. Reinstall components, reconnect connectors etc.
  4. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status The text NOT READY is displayed if diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) . For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .

Is FAULT NOT REGISTERED displayed?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking wiring and components»(ref-404041-S04747854722011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S26065574212011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S23274797742011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S00034776582011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S25854911512011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reinstall components, reconnect connectors etc.
  3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S06126384822011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

See Signal too low. Permanent fault

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent short-circuit to ground according to Short-circuit to ground, permanent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .

Scheme 342

Scheme 342
Scheme 342
  1. Continue Refer to «Information»(ref-404041-S19479743782011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S32287071052011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S32577303942011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check the signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S16062230752011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.
  1. Ignition off.
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation. «Checking wiring and terminals. Permanent fault»(ref-403956-S17348926582011061000000)
  3. Reinstall components, reconnect connectors etc.
  4. Start the engine and let it idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal should be free of disturbances and above 0.6 V or below 0.3 V. If signal is now OK this indicates that the fault was caused by poor contact in the connector. Other information To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) . For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .

Is the signal OK?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking wiring and components»(ref-404041-S02897216972011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S37702737152011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.
  1. Ignition off
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Start the engine. Allow the engine to idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal must be free of interference and between 0.6 - 0.3 V. If the signal is now OK this indicates that the fault was caused by a poor connection in the connector. Other information: To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) For information about signals on 6 cylinder engines, see «Signal specification»(ref-438318-S29219213252011120100000) See «Contents»(ref-438291-S00903409402011120100000) .

Is the signal OK?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S15832197872011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S17888783942011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

See Signal missing. Permanent fault

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check the signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

  1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000) .
  2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-404035-S07146606272011061000000) .
  3. For information about signals, see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Information»(ref-404041-S04199427822011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S29480290682011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S31200099142011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

  1. YES ECM-ver1
  2. NO Refer to «Replacing the heated oxygen sensor»(ref-404041-S16486863632011061000000)

Try a new heated oxygen sensor (HO2S).

Other information

  1. To access or replace the heated oxygen sensor (HO2S) for the C70, S70, V70 -2000 and V70XC, see «Adapter wiring switch, replacing»(ref-403972-S23212798532011061000000) . For other models, see «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000)
  2. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  3. For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000)
  4. For information about signals on 6 cylinder engines, see «Signal specification»(ref-438318-S29219213252011120100000) .
  1. Continue Refer to «Verification»(ref-404041-S06271992892011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S28376251352011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Permanent fault

See Permanent fault

See Permanent fault

Control module previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «Information»(ref-404041-S12033565412011061000000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

  1. YES ECM-ver1
  2. NO Refer to «Replacing the heated oxygen sensor»(ref-404041-S00698253192011061000000)

Try a new heated oxygen sensor (HO2S). See Adapter wiring switch, replacing .

Other information

  1. To connect the breakout box and access the control module, see «Connecting the breakout box»(ref-403956-S37247582692011061000000)
  2. For information about signals see «Signal specification»(ref-403971-S16906518782011061000000) .
  1. Continue Refer to «Verification»(ref-404041-S13493249522011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S41953140062011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Permanent fault

  1. Ignition off
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Start the engine. Allow the engine to idle. Read off the status of the diagnostic trouble code (DTC) for the rear heated oxygen sensor (HO2S). The text "NOT READY" is displayed if the diagnosis is running. Other information For information about signals on 5 cylinder engines, see «Signal specification»(ref-438318-S23639998362011120100000) For information about signals on 6 cylinder engines, see «Signal specification»(ref-438318-S29219213252011120100000) To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000) See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .

Is "FAULT NOT DETECTED" displayed?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-404041-S24322023402011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S38099034352011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S26658854222011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S16793172992011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the connector for the rear heated oxygen sensor (HO2S). Check for contact resistance and oxidation. Remedy if necessary.

Try a new rear heated oxygen sensor (HO2S) if the above corrective action does not remedy the fault.

Other information

  1. To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-404036-S16934151722011061000000)
  2. See «Checking wiring and terminals»(ref-438291-S01987812252011120100000) .
  1. Continue Refer to «Verification»(ref-404041-S40784034022011061000000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-404031-S12707510902011061000000)
  4. Do not switch off the engine after the test drive
  5. Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the rear heated oxygen sensor (HO2S)
  6. There must not be any faults when the diagnostic is complete.

Was a fault detected?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-404041-S36222526802011061000000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

More articles — Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 6 of 14 (Convertible)