Permanent Fault

Permanent fault

Checking for air leakage in the exhaust system
Check for air leakage. See Checking for air leakage in the exhaust system Air Leakage Exhaust System, Check.
Remedy as necessary.





Was there any air leakage?

Yes - ECM-ver1

No - Replacing the component

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Replacing the component
Try a new heated oxygen sensor (HO2S).

Other information
- To access or replace the heated oxygen sensor (HO2S) for the C70, S70, V70 -2000 and V70XC, see Adapter wiring switch, replacing Adapter Wiring Switch, Replacing. For other models, see Heated oxygen sensor (HO2S), replacing Heated Oxygen Sensor (HO2S), Replacing
- To connect the breakout box / access the control module, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- For information about signals on 5 cylinder engines, see Signal specification Signal Description / Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Description / Specification.






Continue - Verification

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Verification




Verification

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








- Ignition off.
- Reconnect connectors, reinstall components.
- 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?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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Fault-tracing information




Information

Fault-tracing information
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.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking for air leakage in the exhaust system

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