P2192
Generic (SAE) Basic entry
System Too Rich at Higher Load
Severity
Medium
Typical repair cost
30 – 600 EUR
System
Powertrain
What it means
P2192 is stored when the oxygen sensor reports too little oxygen in the exhaust and the long-term fuel trim reaches its negative limit. The engine is getting too much fuel or too little air.
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Symptoms
- Check engine light on
- Rough or unstable idle
- Hesitation or poor acceleration
- Increased fuel consumption
- Possible limp mode with reduced power
Common causes
- Vacuum or intake leak after the air flow sensor
- Dirty or failing mass air flow sensor
- Low or high fuel pressure
- Leaking, clogged or stuck injector
- Faulty upstream oxygen sensor or exhaust leak near it
How to diagnose
- Watch short- and long-term fuel trim at idle and at 2500 rpm to see whether the fault is load dependent
- Smoke test the intake for vacuum leaks
- Clean or test the mass air flow sensor
- Check fuel pressure under load and injector balance
- Inspect the exhaust manifold and upstream oxygen sensor area for leaks
Frequently asked questions
Can I keep driving with P2192?
Usually yes for a short time, but expect reduced performance or higher fuel use. Have it diagnosed within a few days.
Will clearing P2192 fix it?
No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.