C2573 Diagnostic Trouble Code

C2573 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 C2573 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Dirty air cleaner element Damaged DPF

Repair Processes :

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. 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 C2573 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 C2573.

Fortunately, C2573 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2573 Trouble Code For Specific Cars

C2573 Ghia 450 Oil Change Reset Button Circuit Open
C2573 Volkswagen Caravelle Reverse Inhibit Control Circuit Malfunction
C2573 Toyota Isis Oil Level Switch Circuit Short To Battery
C2573 Isuzu Kb250
C2573 Lotus 25 Torque Converter Clutch Control Error
C2573 Boll Limousine Compressor Failure
C2573 Fiat Argenta Lamp Headlamp High-Beam Circuit Failure