Code p1135, O2 sensor bank 1 sensor 1, which one is bank 1 is it in front or back of motor?
2002 TOYOTA CAMRY
186,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
JAMESK93
MEMBER
1 POST
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Location . Confusion on which one is bank 1 is it in front or back of motor?
Aug 30, 2024 at 7:49 AM
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BORIS K
AUTOMOTIVE REPAIR CONTRIBUTOR
836 POSTS
Hello,
The engine has 2-cylinder banks. The bank closest to the firewall is Bank 1 and the bank closest to the radiator is Bank 2.
Bank 1 sensor 1 is the upstream O2 sensor of the rear cylinder bank.