Engine Error
P2099
Post Catalyst Fuel Trim System Too Rich Bank 2
Severity
Low
Symptoms
Sooty exhaust tailpipe, rich smell, MIL illuminated
Common Causes
- Faulty Bank 2 Sensor 2 O2 sensor
- High fuel pressure
- Leaky fuel injector on Bank 2
- Air filter severely restricted
How to Fix
- 1 Replace downstream O2 sensor
- 2 Test fuel pressure regulator
- 3 Clean or replace fuel injectors
- 4 Replace engine air filter
Estimated Repair Cost
USD
$50
–
$500
Air filter: $30; O2 Sensor: $150 - $300