C0015 Diagnostic Trouble Code

C0015 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 C0015 diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
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

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C0015 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 C0015.

Fortunately, C0015 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0015 Trouble Code For Specific Cars

C0015 Honda Fr-v PRNDL Reverse Input Short Circuit To Ground
C0015 Datsun Deluxe HO2S Heater Control Circuit (Bank 1 Sensor 3)
C0015 Porsche 944 Fuel Level Sensor B Circuit Low
C0015 Isuzu Impulse
C0015 Lancia Dialogos Speed Wheel Sensor LR Input Short Circuit To Battery
C0015 Warszawa Warszawa SCP (J1850) Invalid or Missing Data for Interior Environment
C0015 Ferrari 365 Intake Air Temperature Circuit Malfunction