C2476 Diagnostic Trouble Code

C2476 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 C2476 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 :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code C2476 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 C2476.

Fortunately, C2476 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2476 Trouble Code For Specific Cars

C2476 Lifan 620 Throttle Control Unit Modulated Command Malfunction
C2476 Mercedes Clk ABS Outlet Valve Coil LF Circuit Short To Battery
C2476 Oldsmobile Starfire Damper Low Side Front Circuit Failure
C2476 Daewoo Rezzo
C2476 Ford Aerostar LF LAMP LOW BEAM CIRCUIT Failure
C2476 Ford Visos Module Transmitted Invalid Data (Non SCP)
C2476 Fiat Ducato Lamp Park Input Circuit Open