C3002 Diagnostic Trouble Code

C3002 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 C3002 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Reduction in engine performance, especially at low RPM levels

Possible Causes :

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.
Some aftermarket accessories and performance modifications
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code C3002 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 C3002.

Fortunately, C3002 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3002 Trouble Code For Specific Cars

C3002 Lloyd 300 Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
C3002 Subaru Impreza 2 Left Rear Center Sensor Circuit Short to Vbat
C3002 Rolls-royce 100ex Hydraulic Pressure Unit
C3002 Nissan Avenir Climate Control Air Temperature Internal Sensor Motor Circuit Short To Battery
C3002 Chevrolet Biscayne Driver Power Window Down Circuit Open
C3002 Volkswagen Sharan 2 SCP (J1850) Invalid Data from GEM
C3002 Honda Ballade Pressure Control Solenoid C Electrical