C0254 Diagnostic Trouble Code

C0254 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 C0254 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code C0254 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 C0254.

Fortunately, C0254 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0254 Trouble Code For Specific Cars

C0254 Dodge Magnum Ignition Key-In Circuit Short To Battery
C0254 Volvo 760
C0254 Sbarro Christelle Injection Control Pressure Out Of Range Low
C0254 Chevrolet Express Driver's Seat Seatback Autoglide Rearward Switch Circuit Short to Ground
C0254 Fairthorpe Mk Injector Circuit Malfunction - Cylinder 5
C0254 Porsche 964 Fuel Level Sensor B Range / Performance
C0254 Chevrolet Tracker Emergency & Road Side Assistance Switch Circuit Short to Ground