I keep gettin a PO175 error code a lot.

Question

I have a 2001 Chevy Tracker and it is the only car we have. I need to keep it running and am worried since I keep getting a PO175 error code. I heard this car has 4 O2 sensors, is that correct? I have only one exhaust system hooked up, not a duel system. I have had 2 O2 sensors replaced and use fuel injector cleaner regularly. What should I work on next? It happens about every couple of months. Thanks, Karen E. McConnell

Answer 1

HI there,

This code is specific to bank 2 of the vehicle. The car does have 4 O2 sensors. Usually the code is related to the bank 2 front O2 sensor not working properly. Since you have had it replaced, the next step would be a problem with one of the fuel injectors on bank 2. If it's not spraying properly it could be causing a rich fuel mixture.