C3348 Diagnostic Trouble Code

C3348 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 C3348 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

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. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code C3348 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 C3348.

Fortunately, C3348 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3348 Trouble Code For Specific Cars

C3348 Lada 112 Servo Motor Potentiometer Vent Circuit Short To Battery
C3348 Mitsubishi Lancer Evo 8 Aux A/C Blower Motor Relay Circuit Short to Ground
C3348 Dacia Duster Fuel Temperature Sensor #2 Circuit Short to Ground
C3348 Gmc Sonoma Park Brake Switch # 1 Released Circuit Short to Gnd
C3348 Mercedes-benz Sl Class Air Suspension Front Inflator Solenoid Output Circuit Open
C3348 Mahindra Scorpio Traction Control Valve RF Circuit Open
C3348 Acura Rdx ABS Inlet Valve Coil LF Circuit Short To Battery