Canada - Engine Controls - MIL ON/Multiple O2 SensorDTC's Set

Bulletin
TSB2383

Issue Date
2005-11-30

Market
Canada

Title
M.I.L. "ON" DTC P0171, P0174, P2195 OR P2197

Component
ENGINE ELECTRICAL

Models
'05 - '06 Sienna

INTRODUCTION:
Under certain driving conditions, some 2005 and 2006 model year Sienna vehicles may exhibit a M.I.L. "ON" condition with at least one of the following DTCs:
- P0171 (System Too Lean [Bank 1])
- P0174 (System Too Lean [Bank 2])
- P2195 (Oxygen [A/F] Sensor Signal Stuck Lean [Bank 1, Sensor 1])
- P2197 (Oxygen [A/F] Sensor Signal Stuck Lean [Bank 2, Sensor 1])

The Air Fuel (A/F) sensor manufacturing process has been improved to correct this condition. The following repair procedures should be used to properly diagnose and repair the affected vehicles.

APPLICABLE VEHICLES:
- 2005 - 2006 model year Sienna vehicles produced BEFORE the Production Change Effective VINs shown below.






PRODUCTION CHANGE INFORMATION:






PARTS INFORMATION:






WARRANTY INFORMATION:






REQUIRED SSTs:

REPAIR PROCEDURE:

DTC P0171 or P0174
Refer to ETAS as follows:
- 2005 model year Sienna Repair Manual: Diagnostics: SFI System: P0171, P0174.
- 2006 model year Sienna Repair Manual: 3MZ--FE Engine Control System: SFI System: P0171, P0174.

NOTE:
Only replace the A/F sensor indicated by the M.I.L. "ON" DTC(s).

DTC P2195 or P2197
Refer to ETAS as follows:
- 2005 model year Sienna Repair Manual: Diagnostics: SFI System: P2195, P2197.
- 2006 model year Sienna Repair Manual: 3MZ--FE Engine Control System: SFI System: P2195, P2197.

NOTE:
Only replace the A/F sensor indicated by the M.I.L. "ON" DTC(s).

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.