OBD-II Code · Emissions
P2099
Post-Catalyst Fuel Trim System Too Rich (Bank 2)
low severitySafe to drive$100-$500
Post-cat fuel trim rich, bank 2.
Common symptoms
- CEL
Likely causes
- Failed downstream O2 bank 2
- Leaking injector
Where to start
- Try the cheapest cause first. Start by checking: failed downstream o2 bank 2.
- Cost & scope. $100-$500
- If the code returns after the fix: escalate to a shop or scanner with live-data and freeze-frame. A code that re-sets means the underlying fault is still there.
Related codes
Look up another code
More free tools