P0137 Toyota Rav4 2.5 -

Question

P0137 appears after ~ 15min on the road

Answer 1

P0137 Oxygen sensor Circuit malfunction Bank 1 Sensor 2

This code condition is for the downstream 02 sensor. which monitor the catalytic convertor, appearing after you clear the code, this is pointing to a failing 02 sensor. the fix replace the downstream 02 sensor