P1130 Long-term fuel trim too lean, multiplicative (bank 2)
P1130 means: Long-term fuel trim too lean, multiplicative (bank 2). The mixture has too little fuel or too much air, and the computer can no longer correct it on its own. Drive gently and have the car checked soon. The repair usually costs about €50–500 in Estonia.
What it means
The mixture has too little fuel or too much air, and the computer can no longer correct it on its own.
This is a make-specific code (VAG). The exact meaning can vary by model and year. On other makes the same code means: Toyota: Air/fuel ratio sensor: implausible reading (bank 1, sensor 1).
What you may notice
- Engine light on
- Rough idle
- Hesitation when accelerating
- The engine may stall
What could be wrong
- 1Air leak (vacuum hose, intake gasket, crankcase breather)
- 2Dirty or faulty mass air flow sensor
- 3Weak fuel pump or clogged fuel filter
- 4Clogged injector
- 5Exhaust leak before the oxygen sensor
Repair difficulty: Moderate
What you can check yourself
Listen at idle for a hiss. Check the vacuum hoses, especially old, cracked ones. You can check the simple things yourself, but the repair is best done in a workshop.
How we fix it
- We check the fuel trims on the diagnostic tool
- We do a smoke test to find the air leak
- We measure fuel pressure and check the MAF sensor
- We replace the leaking hose, gasket or faulty part
Standard SAE description: Long Term Fuel Trim mult., Bank 2 System too Lean