P03CD Diagnostic Trouble Code

P03CD is a kind of OBD-II Diagnostic P-Powertrain 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 P03CD diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P03CD 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 P03CD.

Fortunately, P03CD is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P03CD Trouble Code For Specific Cars

P03CD Land Rover Freelander Steering Phase B Circuit Signal Is Not Sensed
P03CD Nissan Qx Crankshaft Position Sensor A Circuit Intermittent
P03CD Holden Hsv Power Door Unlock Circuit Short To Ground
P03CD Suzuki Xl-6 Mirror Driver Vertical Switch Circuit Open
P03CD Lada Vaz Shift Solenoid C Electrical
P03CD Mitsubishi Shogun Aux Heater Glow Plug Circuit Open
P03CD Lancia Dialogos Speed Wheel Sensor LR Input Short Circuit To Battery