Engine Error
P2097
Post Catalyst Fuel Trim System Too Rich Bank 1
Severity
Low
Symptoms
Check engine light on, minor decrease in fuel mileage
Common Causes
- Faulty downstream O2 sensor
- Exhaust leak near the O2 sensor
- Leaking fuel injector on Bank 1
- Failing catalytic converter
How to Fix
- 1 Replace Bank 1 Sensor 2 O2 sensor
- 2 Weld or patch exhaust leaks
- 3 Test and replace leaky fuel injectors
- 4 Test catalytic converter efficiency
Estimated Repair Cost
USD
$100
–
$600
O2 sensor: $150 - $300; Injectors: $200 - $600