Symptoms of P0137 OBD II Trouble Code
- Faulty o2 sensor Exhaust leak near the rear sensor
- Plugged catalyst
- Short to voltage on O2 signal circuit
- High resistance or open on O2 signal circuit
- Engine running very rich or lean
- Engine misfire condition
- Fuel pressure very high or low - fuel pump or pressure regulator
Common Causes of P0137 OBD II Trouble Code
- Replace faulty sensor
- Repair exhaust leak near the rear sensor
- Check for restriction in catalyst and replace as necessary
- Repair short, open, or high resistance on o2 signal circuit