Emissions - MIL ON/DTC P0456 Set

NUMBER: 25-003-07

GROUP: Emissions

DATE: November 14, 2007

SUBJECT:

DTC P0456 - Evaporative System Small Leak Due To Loose Charcoal From Canister

OVERVIEW:
This bulletin involves performing the diagnostic procedure for DTC P0456, and if necessary, the replacement of evaporative system components.

MODELS:

2007 (DR/DH/D1/DC) Ram Truck (1500/2500/3500)

2007 (HB/HG) Durango/Aspen

2007 (WK) Grand Cherokee

2007 (XK) Commander

NOTE:
This bulletin applies to vehicle built on or between January 26, 2007 and June 18, 2007 (MDH 0126XX to MDH 0618XX respectively).

SYMPTOM/CONDITION:

The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Additional investigation may reveal that the MIL is due to Diagnostic Trouble Code (DTC) P0456 - Evaporative System Small Leak.

DIAGNOSIS:

1. Was vehicle built (check vehicle build date) on or between January 26, 2007 (MDH 0126XX) and June 18, 2007 (MDH 0618XX)?

a. If YES >>> then proceed to the next step.

b. If NO >>> then STOP. This bulletin does not apply. Further diagnosis is required.

2. Using a Scan Tool (StarSCAN(R)) with the appropriate Diagnostic Procedures available in TechCONNECT> Service Info tab > 9 - Engine - Electrical Diagnosis > Diagnosis and Testing, verify all engine systems are functioning as designed. If DTC's other than those listed above are present record them on the repair order and repair as necessary before proceeding further with this bulletin.

3. Perform the complete Diagnostic Procedures for DTC P0456 - Evaporative System Small Leak.

NOTE:
Make sure that the flow and smoke tests are performed completely.

4. Was an evaporative system leak detected when a complete DIG P0456 Diagnostic Procedure was performed.

a. If YES >>> then proceed to the next step.

b. If NO >>> then perform the Repair Procedure.

5. Was the root cause of the leak in the evaporative system a leaking Evaporative System Integrity Module (ESIM)?

a. If YES >>> then perform the Repair Procedure.

b. If NO >>> then STOP. This bulletin does not apply. Further diagnosis and/or repair is required.





PARTS REQUIRED:





SPECIAL TOOLS/EQUIPMENT REQUIRED:

REPAIR PROCEDURE:

1. Replace the following emission system components:

a. Fuel Vapor Canister (with ESIM).

b. Fresh Air Fuel Vapor Filter.

c. Fresh Air Filter to Fuel Vapor Canister Hose.

2. Refer to TechCONNECT for detailed service procedures. From the "Service Info tab select: 25 - Emissions > Evaporative Emissions > Switch - Evap System Monitor and Canister - Vapor

POLICY:
Reimbursable within the provisions of the warranty.





TIME ALLOWANCE:





FAILURE CODE:

Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.