C0261 Diagnostic Trouble Code

C0261 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 C0261 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
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)
Faulty IMRC actuator/sensor

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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.

Process Tips

Diagnostic trouble code C0261 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 C0261.

Fortunately, C0261 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0261 Trouble Code For Specific Cars

C0261 Lamborghini 350 Shift Solenoid E Performance or Stuck Off
C0261 Qvale Mangusta Fuel Temperature Sensor #2 Circuit Short to Battery
C0261 Cadillac Xlr Door Ajar Circuit Failure
C0261 Plymouth Superbird Exhaust Gas Recirculation Circuit Malfunction
C0261 Morgan Sports BRAKE PARK SWITCH CIRCUIT SHORT TO GROUND
C0261 Chevrolet Trailblazer 2 Enable Signal Circuit Short to Battery
C0261 Mbm Coupe Tourism A/C Post Heater Sensor Circuit Short To Ground