Engine Controls - MIL ON/DTC's P0456/P0455 Set
09-021July 22, 2011
Applies To:
2009 RL - From VIN JH4KB2...9C000001 thru JH4KB2...9C001939
2009 RL: MIL Comes On With DTC P0455 or P0456
(Supercedes 09-021, dated October 9, 2009, to revise the information marked by black bars).
REVISION SUMMARY
SYMPTOM
The MIL comes on with DTC P0455 (evaporative emission [EVAP] system large leak detected) or P0456 (evaporative emissions [EVAP] system very small leak detected).
PROBABLE CAUSE
The PGM-FI software does not turn on the TIGHTEN FUEL CAP message on the MID (multi-information display), even if the fuel fill cap is not fully tightened.
CORRECTIVE ACTION
Update the PGM-FI software with the HDS, then check the EVAP system by doing an EVAP function test with the HDS.
SOFTWARE INFORMATION
HDS Software Version:
2.018.007 (May 2009) (black) or later.
Control Module (CM) Update:
Application Version V6.1 7.03 or later.
Database Update 20-APR-2009 or later.
NOTE:
To avoid an incorrect repair that would not be covered under warranty, use the software version listed above or a later version.
The updated PGM-FI software program ID and P/N is shown below. 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
1. Update the PGM-FI software with the HDS. Refer to Service Bulletin 01-026, Updating Control Units/ Modules.
NOTE:
On some 2009 RLs with Tech Package (VINs JH4KB266.9C000001 thru JH4KB266.9C002248) you must disconnect the AcuraLink control unit 5P update connector before updating the PCM. For more information, including additional warranty flat rate time, refer to Service Bulletin 09-009, Disconnect the AcuraLink Update Connector Before Updating the PCM.
2. Do an EVAP function test with the HDS. Does the EVAP system pass the test?
Yes - The EVAP system is OK; return the vehicle to the client.
No - Continue with normal troubleshooting to find the cause of the EVAP system problem.
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