Engine Error
P0159
O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
Severity
Low
Symptoms
Failed emissions testing, check engine light
Common Causes
- Contaminated or aged O2 sensor
- Exhaust leak on Bank 2
- High resistance in sensor connector
How to Fix
- 1 Replace downstream O2 sensor
- 2 Repair exhaust manifold or pipe leak
- 3 Clean sensor connector with contact cleaner
Estimated Repair Cost
USD
$100
–
$350
O2 Sensor replacement: $150 - $350