C202F Diagnostic Trouble Code

C202F 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 C202F diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
Engine surge

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.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code C202F 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 C202F.

Fortunately, C202F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C202F Trouble Code For Specific Cars

C202F Chrysler Crossfire Engine Speed Input Circuit Range/Performance
C202F Fiat Sedici Lateral Accelerometer Signal Fault
C202F Peugeot Asphalte Electronic Throttle Monitor Cruise Disable
C202F Bmw B12 Climate Control Air Temperature Internal Sensor Motor Circuit Open
C202F Lancia Kappa Speed Wheel Sensor RR Coherency Fault
C202F Maserati 4 Transmission Control System MIL Request Circuit High
C202F Cisitalia 303 Exhaust Valve Control Solenoid Circuit Low (Bank 2)