P0C02 Diagnostic Trouble Code

P0C02 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 P0C02 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
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
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. 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 P0C02 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 P0C02.

Fortunately, P0C02 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0C02 Trouble Code For Specific Cars

P0C02 Toyota Proace Park Brake Actuator Assembly Switch Released Circuit Short to Gnd
P0C02 Bmw 7 Climate Control A/C Pressure Switch Circuit Failure
P0C02 Hyundai I20
P0C02 Daihatsu Sonica Glow Plug Circuit Low Input (Bank #2)
P0C02 Rover 3500 Ignition Coil A Primary Circuit Malfunction
P0C02 Holden Ute Power Window RR Motor Circuit Failure
P0C02 Lexus Lx TCU Unable To Control Desired Throttle Angle