C3253 Diagnostic Trouble Code

C3253 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 C3253 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. 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 C3253 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 C3253.

Fortunately, C3253 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3253 Trouble Code For Specific Cars

C3253 Panther J72 Driver Sid, Side crash sensor mount fault
C3253 Rover 10 Idle Control System Circuit Shorted
C3253 Acura Tl ABS Inlet Valve Coil LR Circuit Short To Battery
C3253 Daewoo Vada Gear Control Malfunction
C3253 Oltcit Special Damper LR Circuit Short To Battery
C3253 Mg Tb Alarm Panic Input Circuit Short To Ground
C3253 Lloyd Arabella Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem