Engine Error
P0136
O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
Severity
Low
Symptoms
Check engine light, failed emissions test
Common Causes
- Faulty downstream O2 sensor
- Exhaust leak before the sensor
- Damaged sensor wiring
- Failing catalytic converter
How to Fix
- 1 Replace Bank 1 Sensor 2 O2 sensor
- 2 Repair exhaust pipe leaks
- 3 Fix broken wires
- 4 Test catalytic converter
Estimated Repair Cost
USD
$100
–
$400
Downstream O2 sensor: $150 - $350