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 P0116 Is Set
2005 Honda Accord L4-2.4LSECTION Engine Controls - MIL ON/DTC P0116 Is Set
06-048
July 21, 2011
Applies To: See VEHICLES AFFECTED
MIL Comes On With DTC P0116
(Supersedes 06-048, dated July 29, 2011, to update the information marked by the black bars)
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0116 (ECT sensor 1 range/performance problem).
PROBABLE CAUSE
The ECM/PCM misinterprets the engine coolant temperature inputs.
VEHICLES AFFECTED
CORRECTIVE ACTION
Update the ECM/PCM PGM-FI software using HDS software version 2.005.004 (or later).
SOFTWARE INFORMATION
WARRANTY CLAIM INFORMATION
DIAGNOSIS
Do the normal troubleshooting for DTC P0116 (ECT sensor range/performance problem):
^ Refer to the Fuel and Emissions section of the appropriate service manual or,
^ Online, enter P0116, then select DTC
Troubleshooting: P0116 from the list.
- If you find a problem, make the necessary repair. This bulletin does not apply.
- If you do not find any problems, go to REPAIR PROCEDURE.
REPAIR PROCEDURE
Use the HDS with software version 2.005.004 or later to update the ECM/PCM PGM-FI software. Refer to Service Bulletin 01-023, Updating the Control Units/Modules.
Disclaimer
July 21, 2011
Applies To: See VEHICLES AFFECTED
MIL Comes On With DTC P0116
(Supersedes 06-048, dated July 29, 2011, to update the information marked by the black bars)
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0116 (ECT sensor 1 range/performance problem).
PROBABLE CAUSE
The ECM/PCM misinterprets the engine coolant temperature inputs.
VEHICLES AFFECTED
CORRECTIVE ACTION
Update the ECM/PCM PGM-FI software using HDS software version 2.005.004 (or later).
SOFTWARE INFORMATION
WARRANTY CLAIM INFORMATION
DIAGNOSIS
Do the normal troubleshooting for DTC P0116 (ECT sensor range/performance problem):
^ Refer to the Fuel and Emissions section of the appropriate service manual or,
^ Online, enter P0116, then select DTC
Troubleshooting: P0116 from the list.
- If you find a problem, make the necessary repair. This bulletin does not apply.
- If you do not find any problems, go to REPAIR PROCEDURE.
REPAIR PROCEDURE
Use the HDS with software version 2.005.004 or later to update the ECM/PCM PGM-FI software. Refer to Service Bulletin 01-023, Updating the 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.