Engine Controls - MIL ON/DTC's P2195/P2197/P0171/P0174
ENGINEEG021-05
REVISED
Title: M.I.L. "ON" DTC P0171, P0174, P2195, OR P2197
Models: 2006 RX 400h
November 17, 2005
TSIB REVISION NOTICE:
- December 1, 2005: The VIN in Production Change Information has been updated. Previous versions of this TSIB should be discarded.
Introduction
Under certain driving conditions, some 2006 model year RX 400h 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
^ 2006 model year RX 400h vehicles produced BEFORE the Production Change Effective VIN shown below.
Production Change Information
Parts Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Required SSTs
Repair Procedure
DTC P0171 or P0174
Refer to the Technical Information System (TIS), 2006 model year RX 400h 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 TIS, 2006 model year RX 400h 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).