P143C Diagnostic Trouble Code

P143C 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 P143C diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
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 rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the 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 P143C 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 P143C.

Fortunately, P143C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P143C Trouble Code For Specific Cars

P143C Panhard Et Levassor Gordon-bennet Driver Power Window Motor Circuit Short To Battery
P143C Datsun Z HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P143C Triumph Tiger Pedal Correlation PDS1 and LPDS Low
P143C Hillman Hunter Passenger's Seatbelt Tension Reducer Circuit Short to Ground
P143C Pininfarina Metrocubo ETC In Power Limiting Mode
P143C Mercedes A Class ABS Hydraulic Brake Switch Circuit Failure
P143C Volkswagen California Reverse Engagement Error