C0488 Diagnostic Trouble Code

C0488 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 C0488 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
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)
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. 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 C0488 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 C0488.

Fortunately, C0488 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0488 Trouble Code For Specific Cars

C0488 Cooper Jaguar Fuel Sender Circuit Failure
C0488 Sta Matilde Sm Lamp Headlamp Input Circuit Short To Ground
C0488 Lagonda M Shift Solenoid E Control Circuit High
C0488 Thames 80 Module Transmitted Invalid Data (Non SCP)
C0488 Bentley S1 Battery Voltage Circuit Malfunction
C0488 Gutbrod Superior Passenger Sid, Side mount Airbag Low resistance on Squib
C0488 Rover P2 Ignition Coil Primary/Secondary Circuit Malfunction