Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Controls - MIL ON/DTC P0134 Is Set
2005 Honda Civic Si L4-2.0LSECTION Engine Controls - MIL ON/DTC P0134 Is Set
07-015
July 23, 2011
Applies To: 2005 Civic Si - ALL
MIL Comes On With DTC P0134
(Supersedes 07-015, dated March 9, 2007, to update the information marked by the black bars)
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0134 (air/fuel ratio [A/F] sensor [sensor 1] no activity detected).
PROBABLE CAUSE
The ECM misinterprets inputs as a faulty air/fuel ratio sensor.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS.
WARRANTY CLAIM INFORMATION
SOFTWARE INFORMATION
REPAIR PROCEDURE
1. Update the PGM-FI software with the HDS. Refer to Service Bulletin 01-023, Updating Control Units/ Modules.
2. Do the ECM idle learn procedure:
^ Make sure all electrical items (A/C, audio unit, defogger, lights, etc.) are off.
^ Start the engine, and let it reach normal operating temperature (the cooling fans cycle twice).
^ Let the engine idle (idle stop off and throttle closed) for 10 minutes.
Disclaimer
July 23, 2011
Applies To: 2005 Civic Si - ALL
MIL Comes On With DTC P0134
(Supersedes 07-015, dated March 9, 2007, to update the information marked by the black bars)
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0134 (air/fuel ratio [A/F] sensor [sensor 1] no activity detected).
PROBABLE CAUSE
The ECM misinterprets inputs as a faulty air/fuel ratio sensor.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS.
WARRANTY CLAIM INFORMATION
SOFTWARE INFORMATION
REPAIR PROCEDURE
1. Update the PGM-FI software with the HDS. Refer to Service Bulletin 01-023, Updating Control Units/ Modules.
2. Do the ECM idle learn procedure:
^ Make sure all electrical items (A/C, audio unit, defogger, lights, etc.) are off.
^ Start the engine, and let it reach normal operating temperature (the cooling fans cycle twice).
^ Let the engine idle (idle stop off and throttle closed) for 10 minutes.
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.