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

Bulletin
TSB2925

Issue Date
December 10, 2010

Title:
MIL "ON" DTC P0442, P0455 OR P0456

Component
FUEL

Models:
'03-'04 GX470

INTRODUCTION:
Some 2003 - 2004 model year GX470 vehicles may exhibit a MIL "ON" condition with one or more of the following DTCs: P0442, P0455 or P0456. Use the repair procedure below to address this condition.






APPLICABILITY:






WARRANTY INFORMATION:






PARTS INFORMATION:






REQUIRED TOOLS & EQUIPMENT:

REPAIR PROCEDURE:
1. Using ETAS Techstream, confirm that one or more of the following DTCs are set: P0442, P0455, or P0456.
2. Inspect the fuel cap.
Does it tighten properly?
- YES - Proceed to step 3.
- NO - Replace the fuel cap, then proceed to step 4.

3. Inspect the EVAP system for the leak source.
Refer to the applicable Repair Manual within E-TAS / TIS library:
- Division: Lexus
- Model: GX470
- Year: 2003
- Service Category: Engine/Hybrid System
- Section: Engine Control
- Keyword: SFI System (2UZ-FE): P0441, P0442, P0446, P0456 Evaporative Emission Control System Leak Detected

- Division: Lexus
- Model: GX470
- Year: 2004
- Service Category: Engine/Hybrid System
- Section: Engine Control
- Keyword: SFI System (2UZ-FE) (from August 2003): P0441, P0442, P0446,P0455, P0456 Evaporative Emission Control System Leak Detected

Was the leak source isolated at the fuel cap to filler pipe sealing area?
- YES - Replace the fuel cap, then proceed to step 5.
- NO - This TSB does NOT apply - Refer to the Repair Manual for further diagnosis.

4. Clear DTCs. The repair is complete.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.