What does OBD2 code P0137 mean?+
P0137 stands for O2 Sensor Circuit Low Voltage Bank 1 Sensor 2. Downstream O2 sensor on Bank 1 reading consistently low voltage.
What causes code P0137?+
Faulty downstream sensor; Exhaust leak after catalyst; Catalytic converter failure; Lean exhaust gases
How do I fix code P0137?+
Check for exhaust leaks after cat; Test downstream sensor voltage; Replace downstream O2 sensor; Test catalytic converter efficiency
How much does it cost to fix P0137?+
Estimated repair cost for P0137 is $100–$350.
Is P0137 DIY-friendly?+
Yes — P0137 is generally DIY-friendly with basic tools.