C2201 Diagnostic Trouble Code

C2201 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 C2201 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
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

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
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

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 all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C2201 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 C2201.

Fortunately, C2201 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2201 Trouble Code For Specific Cars

C2201 Aston Martin Virage Air Temperature External Sensor Circuit Open
C2201 Chevrolet Suburban Electronic Feedback Signal Not Detected
C2201 Simca 1307 Intake Manifold Runner Control Circuit Malfunction
C2201 Giannini 1000 Oil Change Reset Button Circuit Short To Battery
C2201 Mazda Cx-3 Transmission Transfer Case Disengaged Solenoid Short to Ground
C2201 Steyr-puch Haflinger Lamp Turn Signal Left Circuit Open
C2201 Tatra T107 Mirror Switch Assembly Circuit Failure