C014C Diagnostic Trouble Code

C014C 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 C014C diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
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
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
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code C014C 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 C014C.

Fortunately, C014C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C014C Trouble Code For Specific Cars

C014C Alvis Tc21 Air Suspension Disable Switch Circuit Failure
C014C Chevrolet Zafira Engine Coolant Temperature Circuit Range/Performance Problem
C014C Brutsch Mopetta Cruise Control Resume Signal Malfunction
C014C Mg X20 Alternator Load Input Failed Low
C014C Nissan 400 Climate Control A/C Lock Sensor Failure
C014C Pontiac Stinger Floor Temperature Switch Circuit Malfunction
C014C Bmw 2000 Camshaft Position Sensor Circuit Intermittent