C1114 Diagnostic Trouble Code

C1114 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 C1114 diagnostic trouble code may include:

Faulty or damaged wiring
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
Poor fuel economy
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)
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. 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.

Process Tips

Diagnostic trouble code C1114 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 C1114.

Fortunately, C1114 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1114 Trouble Code For Specific Cars

C1114 Zil 4104 Seat Belt Switch Circuit Failure
C1114 Aston Martin V8 Air Suspension Warning Lamp Circuit Short To Battery
C1114 Matra M530 Transmission Neutral Safety Switch Open Circuit
C1114 Volvo P1900 SCP (J1850) Invalid or Missing Data for Engine Systems Other
C1114 Kia Towner Servo Motor Airintake Right Circuit Failure
C1114 Spyker C12 Lamp Dome Input Circuit Open
C1114 Mini 1000 Anti Theft System