10. Confirm fit and finish of rear bumper cover.2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) DIAGNOSIS AND REPAIR,MAINTENANCE, Technical Service Bulletin # SB0032-10 Date: 100520

Engine Controls - MIL ON/Multiple O2 Sensor DTC's Set

L-SB-0032-10

May 20, 2010

MIL "ON" DTC P2195, P2197, P0138, P0158, P0031, or P0051

Service Category

Engine/Hybrid System

Section

Engine Control

Market

USA

Applicability

Introduction

Some 2010 model year RX 350 vehicles may exhibit a MIL "ON" condition with one or more of the following Diagnostic Trouble Codes (DTCs)

stored in the Engine Control Module/ECM (SAE term:

Powertrain Control Module/PCM):

^ P2195 - Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

^ P2197 - Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1)

^ P0138 - Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

^ P0158 - Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2)

^ P0031 - Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

^ P0051 - Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1)

Use the following repair procedure to address this condition.

Production Change Information

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 452

This TSIB applies to vehicles produced BEFORE the Production Change Effective VINs shown.

Warranty Information

^ This repair is covered under the Lexus Federal Emission 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 occurrence of the specified condition described in this bulletin.

Parts Information

Required Tools & Equipment

Additional TIS Techstream or Techstream Lite units may be ordered by calling Approved Dealer Equipment (ADE).

Repair Procedure

1. Using TIS Techstream verify DTC P2195 P2197 P0138 P0158 P0031 or P0051 are present.

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 453

2. Follow the procedure outlined in TSIB L-SB-0109-09, "MIL 'ON' DTC P0138 and/or P0158 Diagnostic Tips" to inspect the appropriate A/F and

02 sensor and circuit.

3. If the A/F sensor requires replacement, follow the procedure in the Repair Manual.

Refer to the Technical Information System (TIS), 2010 model year RX 350 Repair Manual: