C2601 Diagnostic Trouble Code

C2601 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 C2601 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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 C2601 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 C2601.

Fortunately, C2601 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2601 Trouble Code For Specific Cars

C2601 Nissan Cube Clutch Actuator Circuit Range/Performance
C2601 Nissan R300 Crankshaft Position Sensor A Circuit Low Input
C2601 Durkopp 16 Hp Immobilizer Code Word/ID Number Write Failure
C2601 Holden Xu Pressure Control Solenoid "C" Open Circuit
C2601 Maserati Mistral Transmission Fluid Pressure Sensor/Switch F Circuit Range/Performance
C2601 Amc Javelin Air Suspension Front Inflator Solenoid Output Circuit Short To Ground
C2601 Delahaye 235 Hydraulic Pressure Sensor Circuit High Input