P0468 MERCEDES-BENZ Purge Flow Sensor Circuit High Input
Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Tag: MERCEDES
P1031 MERCEDES-BENZ Heated Oxygen Sensor Malfunction
Possible causes – Faulty Heated Oxygen Sensor– Heated Oxygen Sensor harness is open or shorted– Heated Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1031 MERCEDES-BENZ Description Heated Oxygen Sensor (HO2S)
P1402 MERCEDES-BENZ Exhaust Gas Recirculation Open-Loop Control
Possible causes – The EGR volume control valve circuit harness is open or shorted– EGR volume control valve leaking or stuck open– Faulty EGR temperature sensor Tech notes Start by cleaning the EGR valve, if the code persist it may