DTC U142 Chrysler
O2 Sensor Signal Stuck Rich Bank 2 Sensor 1
O2 Sensor Signal Stuck Rich Bank 2 Sensor 1
Description
Engine running in closed loop, and the DME detected the O2S indicated a rich signal, or it could no longer control Fuel Trim because it was at its rich limit. The sensor temperature is heated up. The relative engine load change is less than or equal to 3
Cause and Solution
Engine oil level highCamshaft timing errorCylinder compression lowExhaust leaks in front of O2SEGR valve is stuck openEGR gasket is leakingEVR diaphragm is leakingDamaged fuel pressure regulator or extremely low fuel pressure
Video Guide
Diagnostic Info
- DTC Code: U142
- Brand: Chrysler