C0052 Diagnostic Trouble Code

C0052 is a kind of OBD-II Diagnostic C-Chassis Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a C0052 diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code C0052 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before C0052.

Fortunately, C0052 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0052 Trouble Code For Specific Cars

C0052 Volvo C70 SCP (J1850) Invalid or Missing Data for Engine RPM
C0052 Renault P55 Heated Catalyst Temperature Below Threshold (Bank 1)
C0052 Willys-overland 675
C0052 Lti Tx Traction Control Valve LF Circuit Failure
C0052 Nissan Grand Clutch Position Sensor Circuit Malfunction
C0052 Suzuki Alto Vii Memory 1 Switch Circuit Short To Battery
C0052 Fiat Premio Lamp Turn Signal Right Circuit Short To Ground