Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2009ES 350 V6-3.5L (2GR-FE)REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE CONTROLS - A/F AND O2 SENSOR IDENTIFICATION
2009 Lexus ES 350 V6-3.5L (2GR-FE)
Engine Controls - A/F And O2 Sensor Identification
2009 Lexus ES 350 V6-3.5L (2GR-FE)SECTION Engine Controls - A/F And O2 Sensor Identification
L-SB-0188-09
December 23, 2009
Engine Bank 1 and Bank 2 A/F and 02 Identification
Service Category
Engine/Hybrid System
Section
Engine Control
Applicability
TSIB SUPERSESSION NOTICE
The information contained in this TSIB supersedes TSIB No. EG015-07.
^ Applicability has been updated to include 2009 - 2010 model year vehicles.
TSIB No. EG015-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding.
Introduction
This service bulletin provides information on the proper identification of engine bank 1 and engine bank 2 for correct A/F sensor and oxygen sensor replacement.
This bulletin contains information that identifies engine bank 1 and engine bank 2 on the following engines:
2GR-FE, 2GR-FSE, 2GR-FXE 3GR-FSE, 4GR-FSE 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FE, 1UR-FSE, 2UR-FSE, 2UR-GSE, 3UR-FE, 1UZ-FE, 2UZ-FE, and 3UZ-FE
^ Bank 1 (B1) refers to the bank that includes cylinder No. 1.
^ Bank 2 (B2) refers to the bank opposite bank 1.
^ Sensor 1 (S1) refers to the sensor that is located before the catalytic converters.
^ Sensor 2 (S2) refers to the sensor that is located after the catalytic converters.
Warranty Information
Applicable Vehicles
Engine Bank Identification
A/F and 02 Sensor Identification
December 23, 2009
Engine Bank 1 and Bank 2 A/F and 02 Identification
Service Category
Engine/Hybrid System
Section
Engine Control
Applicability
TSIB SUPERSESSION NOTICE
The information contained in this TSIB supersedes TSIB No. EG015-07.
^ Applicability has been updated to include 2009 - 2010 model year vehicles.
TSIB No. EG015-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding.
Introduction
This service bulletin provides information on the proper identification of engine bank 1 and engine bank 2 for correct A/F sensor and oxygen sensor replacement.
This bulletin contains information that identifies engine bank 1 and engine bank 2 on the following engines:
2GR-FE, 2GR-FSE, 2GR-FXE 3GR-FSE, 4GR-FSE 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FE, 1UR-FSE, 2UR-FSE, 2UR-GSE, 3UR-FE, 1UZ-FE, 2UZ-FE, and 3UZ-FE
^ Bank 1 (B1) refers to the bank that includes cylinder No. 1.
^ Bank 2 (B2) refers to the bank opposite bank 1.
^ Sensor 1 (S1) refers to the sensor that is located before the catalytic converters.
^ Sensor 2 (S2) refers to the sensor that is located after the catalytic converters.
Warranty Information
Applicable Vehicles
Engine Bank Identification
A/F and 02 Sensor Identification
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.