2002 Chevrolet venture

Question

I need to know where code sensor are location p0137, p0135, p0134?

Answer 1

Hi there,

P0134 and 135 are for problems with the front heated O2 sensor. This is mounted in the exhaust system prior to the catalytic converter. The final code P0137 is for problems with heated O2 sensor #2. This is the one after the converter. Because there are issues with the front sensor, I would replace that first, then clear codes and see if the rear sensor code returns. A faulty front sensor can cause the rear sensor to not work properly.