O2 sensor circuit bank 1 sensor 2

Asked by Tristen Nov 30, 2018 at 11:02 AM about the 2001 Audi A4 1.8T quattro AWD

Question type: Maintenance & Repair

OBD reader gave me this code (should be in
photo). I just dont know where to find my sensor
bank 1 sensor 2. Which I think is the downstream
sensor. I drive a 2001 Audi A4 Quattro 1.8T.

1 Answer
22,650

Guru9FSV8 answered 5 years ago

Sensor 1. Is on the side of cylinder 1. Sensor 2 is down after the catalytic converter. If it is a 4 cylinder, it is the only downstream sensor.

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