P04AA Code: Meaning, Causes, and Symptoms | OBD2 Codes
P04AA – Exhaust Pressure Control Valve ‘B’ Position Sensor/Switch Circuit Intermittent/Erratic
P04AA Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P04AA Possible Causes
Faulty Exhaust Pressure Control Valve ‘B’ Position Sensor/Switch,Exhaust Pressure Control Valve ‘B’ Position Sensor/Switch harness is open or shorted,Exhaust Pressure Control Valve ‘B’ Position Sensor/Switch circuit poor electrical connection
P04AA Description
The Powertrain Control Module (PCM) monitors the Exhaust Pressure Control Valve Position Sensor. The PCM sets the OBDII code when the Exhaust Pressure Control Valve Position Sensor is not to factory specifications.