Volkswagen Touareg 2004-06

4.2L V8 - Auto


4.2L V8 - Auto

Trouble Code: P1150

Lack of HO2S-21 Switching, Fuel Trim At Rich/Lean Limit

Possible Causes:

Air intake system leaking, vacuum hoses leaking or damaged
Air leaks located after the MAF sensor mounting location
EGR valve sticking, EGR diaphragm leaking, or gasket leaking
EVAP vapor recovery system has failed
Excessive fuel pressure, leaking or contaminated fuel injectors
Exhaust leaks before or near the HO2S(s) mounting location
Fuel pressure regulator is leaking or damaged
HO2S circuits wet or oily, corroded, or poor terminal contact
HO2S signal circuit open, shorted to ground, shorted to power, or the sensor has failed
Low fuel pressure or vehicle driven until it was out of fuel
Oil dipstick not seated or engine oil level too high (overfilled)