Engine Error
P0153
O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
Severity
Medium
Symptoms
Poor fuel efficiency, engine hesitation, failed smog check
Common Causes
- Aging or contaminated O2 sensor
- Exhaust manifold leak
- Vacuum leak on Bank 2
- Faulty Mass Air Flow sensor
How to Fix
- 1 Replace upstream O2 sensor on Bank 2
- 2 Tighten or replace exhaust manifold gasket
- 3 Check for and fix vacuum leaks
- 4 Clean or replace MAF sensor
Estimated Repair Cost
USD
$100
–
$450
O2 Sensor: $150 - $350; Exhaust gasket repair: $200 - $450