C0248 Diagnostic Trouble Code

C0248 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 C0248 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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.
Faulty IMRC actuator relay (if equipped)

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. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code C0248 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 C0248.

Fortunately, C0248 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0248 Trouble Code For Specific Cars

C0248 Alvis Tb14 Air Suspension Compressor Relay Circuit Failure
C0248 Rolls-royce Silver Wraith Idle Air Control System At Adaptive Clip
C0248 Seat Toledo 3 Input-shaft-speed input circuit failure
C0248 Dodge Intrepid Ignition Cylinder Sensor Battery Short
C0248 Honda Torneo Reverse Mirror Output Circuit Failure
C0248 Kia Rondo Secondary Air Injection System Switching Valve A Circuit Malfunction
C0248 Aston Martin Am Vantage Air Suspension RF Height Sensor Circuit Short To Battery