P2192
System Too Rich at Higher Load Bank 1
Fuel & air metering
Generic OBD-II
Medium
What it means
P2192 means the ECM sees the air-fuel mixture on bank 1 running too rich specifically under higher engine load — the extra fuel demand exposes a supply that's already over-fuelling. The car drives, but the rich mixture wastes fuel and can foul plugs and load the catalytic converter until the cause is corrected.
Medium
Can I keep driving? Drivable, but the rich mixture wastes fuel and can foul plugs and load the catalytic converter — address it before those add up.
Common symptoms
What you'll notice
- Check-engine light on (may enter reduced-power fail-safe)
- Rough running or hesitation under acceleration
- Poor fuel economy
- Fuel smell or, in bad cases, black exhaust smoke
Common causes
Most likely first
- Excessive fuel pressure (faulty regulator)Likely
- Leaking or stuck-open fuel injector on bank 1Common
- MAF sensor over-reading airflowCommon
- Faulty coolant temp sensor keeping the mixture in a rich warm-up modeLess often
- Faulty upstream oxygen sensor on bank 1Less often
- Leaking EVAP purge valve adding fuel vaporLess often
How to diagnose & fix
Work through it in order
- Read fuel-trim data under load — heavily negative trim on bank 1 confirms a rich condition.
- Check fuel pressure against spec; a high reading points to the regulator.
- Inspect for leaking or stuck-open injectors on bank 1.
- Check the MAF and coolant temp sensor readings for plausibility.
- Inspect the EVAP purge valve for leaking or sticking.
- Repair the confirmed cause, clear, and re-run a drive cycle.
FAQ
Quick answers
Is it safe to drive with P2192?+
Short-term yes, but a persistently rich mixture fouls plugs and can overheat and damage the catalytic converter, so don't leave it for long.
Can I just clear P2192?+
It returns within a drive cycle or two while the mixture is still rich; the underlying fuel-trim fault has to be fixed.
Related codes
Often seen with P2192
Read & clear P2192 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX