Fuel System - MIL ON/DTC's P0442/P0455/P0456

Bulletin No: 01-020/10 Last
Issued: 03/26/2010

Subject:
LOOSE FUEL FILLER CAP WITH DTC P0442, P0455, AND P0456

APPLICABLE MODEL(S)/VINS

2004-2009 Mazda3 (including Mazdaspeed3) with VINS lower than JM1BK******251214 (produced before November 1, 2008)

2006-2009 Mazda5 with VINS lower than JM1CR******348657 (produced before November 1, 2008)

DESCRIPTION

Some vehicles may experience a fuel filler cap that is hard to tighten and MIL ON with DTC P0442, P0455, and P0456 stored. This is caused by fuel filler caps contacting the filler pipe before being fully tightened, and EVAP gas leaks due to insufficient cap sealing. The design of the fuel filler cap has now been changed.

P0442: EVAP system leak detected (small leak)

P0455: EVAP system leak detected (gross leak/no flow)

P0456: EVAP system leak detected (very small leak)

Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE

1. Verify customer concern.

2. Refer to SB 01-021/09 for troubleshooting, then replace the fuel filler cap with modified one as necessary.

3. Verify repair.

PART(S) INFORMATION





NOTE:

^ There is no change to the part number due to this modification. However, all the stock at the parts warehouse has already been replaced with the modified part.

^ The modified fuel filler cap has a white dot on the tether as shown for old/new part identification. When the part number is updated, the white dot will disappear.

WARRANTY INFORMATION





NOTE:

^ This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.

^ This repair will be covered under Mazda's New Vehicle Limited, California Emissions, and PZEV Warranty where applicable. Please consult Warranty Wizard.

^ Additional diagnostic time cannot be claimed for this repair.