P072C Mercedes E 280 OBD Code

OBD/2 P072C error code description and symptoms.

HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw.
The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S. Water in harness connector. Open VPWR circuit. Open GND circuit. Low battery voltage. Corrosion or poor mating terminals and wiring Damaged HO2S heater. Damaged PCM.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

P072C Mercedes E 280 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine P072C light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If servo motor potentiometer airintake left circuit open so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the servo motor potentiometer airintake left circuit open.

Common Causes of Mercedes E 280 P072C OBD2 Code

A common cause of code P072C is the failure of Servo Motor Potentiometer Airintake Left Circuit Open, but there are several other possible causes as well, such as ;

Exhaust tube
Faulty Variable Camshaft Timing (VCT) position solenoid
Camshaft advance mechanism binding (VCT unit)
Open circuits caused by damage to wiring.

P072C is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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P072C Mercedes E 280 OBD Code

P072C Mercedes E 280 Error Code Repair Process :

Common Causes of Mercedes E 280 P072C OBD2 Code

P072C code for other Mercedes cars