Volkswagen P1150: Lack of HO2S-21 Switching, Fuel Trim At Rich/Lean Limit
Is your scanner showing Volkswagen P1150?
No worries. We'll show you what it means and how to deal with it.
Volkswagen P1150: Lack of HO2S-21 Switching, Fuel Trim At Rich/Lean Limit
OVERVIEWWhat Does The Volkswagen P1150 Code Mean?
Engine running in closed loop, and the ECM detected the HO2S circuit was too lean or too rich, or that it could no longer correct Fuel Trim (i. e. , the Fuel Trim was at its calibrated rich limit or its calibrated lean limit).
What Are The Potential Causes Of The Volkswagen P1150 Code?
- Air intake system leaking, vacuum hoses leaking or damaged
- Air leaks located after the MAF sensor mounting location
- EGR valve sticking, EGR diagramleaking, or gasket leaking
- EVAP vapor recovery system has failed
- Excessive fuel pressure
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Volkswagen P1150, DTCDECODE.
