P046F OBD II Trouble Code Exhaust Gas Recirculation Sensor B Circuit Intermittent
How to quickly diagnose, repair, and info on symptoms and causes of a P046F code which means that the B EGR sensor circuit has an intermittent or erratic problem.
Symptoms of P046F OBD II Trouble Code
The service engine soon light will illuminate and the OBD code P046F will be set. Additionally, a second code relating to the EGR sensor failure may be set. Code P044C relates to a low sensor voltage and P044D relates to a high voltage situation
If the EGR pintle is stuck partly open, the vehicle will not idle well or stalls
Ping from detonation may be heard when under a load or at high RPM
No symptoms at all
Common Causes of P046F OBD II Trouble Code
Defective EGR sensor "B"
Defect in the wiring harness to the sensor
EGR pintle stuck in the closed position and a build up of carbon is preventing it from opening