Engine Controls - MIL ON/DTC P0455 Is Set
06-086July 21, 2011
Applies To: See VEHICLES AFFECTED
MIL Comes On With DTC P0455
(Supersedes 06-086, dated May 23, 2007, to update the information marked by the black bars)
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0455 (evaporative emissions system large leak detected).
PROBABLE CAUSE
The ECM/PCM misinterprets FTP (fuel tank pressure) sensor input during high load and heavy throttle application, setting DTC P0455.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS.
VEHICLES AFFECTED
WARRANTY CLAIM INFORMATION
SOFTWARE INFORMATION
DIAGNOSIS
1. Use the HDS to retrieve the DTC P0455 freeze data and/or the on-board snapshot.
2. Compare the MAP sensor voltage to the BARO sensor voltage:
^ If the two readings are within 0.05 volt of each other, go to REPAIR PROCEDURE.
^ If the two readings are not within 0.05 volt of each other, this service bulletin does not apply; continue with normal troubleshooting.
REPAIR PROCEDURE
Update the PGM-FI software with the HDS and software version 2.009.007 or later. Refer to Service Bulletin 01-023, Updating Control Units/Modules.
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