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's P0171/P0174 Stored
2008 Acura TL V6-3.2LSECTION Engine Controls - MIL ON/DTC's P0171/P0174 Stored
08-043
July 22, 2011
Applies To:
2007-08 TL Type-S - ALL
MIL Comes On With DTC P0171 or P0174
(Supercedes 08-043, dated October 3, 2008, to update the information marked by black bars).
REVISION SUMMARY
SYMPTOM
The MIL is on with DTC P0171 (rear bank [bank 1] fuel system too lean) or DTC P0174 (front bank [bank 2] fuel system too lean).
PROBABLE CAUSE
The PCM misinterprets inputs as a lean condition.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS.
SOFTWARE INFORMATION
HDS Software Version: 2.015.018 Sept 2008 (blue) or later.
Control Module (CM) Update:
Application Version V6.13.09 or later.
Database Update 01-SEPT-2008 or later.
NOTE:
If you use an earlier HDS software version, the HDS may incorrectly indicate that the vehicle does not need an update when it actually does.
The updated PGM-FI software program IDs and P/Ns are shown. If this, or a later program ID, is the Current Program ID displayed during the update, the software for this service bulletin is already installed.
WARRANTY CLAIM INFORMATION
REPAIR PROCEDURE
Update the PGM-FI software with the HDS. Refer to Service Bulletin 01-026, Updating Control Units/Modules.
Disclaimer
July 22, 2011
Applies To:
2007-08 TL Type-S - ALL
MIL Comes On With DTC P0171 or P0174
(Supercedes 08-043, dated October 3, 2008, to update the information marked by black bars).
REVISION SUMMARY
SYMPTOM
The MIL is on with DTC P0171 (rear bank [bank 1] fuel system too lean) or DTC P0174 (front bank [bank 2] fuel system too lean).
PROBABLE CAUSE
The PCM misinterprets inputs as a lean condition.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS.
SOFTWARE INFORMATION
HDS Software Version: 2.015.018 Sept 2008 (blue) or later.
Control Module (CM) Update:
Application Version V6.13.09 or later.
Database Update 01-SEPT-2008 or later.
NOTE:
If you use an earlier HDS software version, the HDS may incorrectly indicate that the vehicle does not need an update when it actually does.
The updated PGM-FI software program IDs and P/Ns are shown. If this, or a later program ID, is the Current Program ID displayed during the update, the software for this service bulletin is already installed.
WARRANTY CLAIM INFORMATION
REPAIR PROCEDURE
Update the PGM-FI software with the HDS. Refer to Service Bulletin 01-026, Updating Control Units/Modules.
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.