C0463 Diagnostic Trouble Code

C0463 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 C0463 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
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)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code C0463 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 C0463.

Fortunately, C0463 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0463 Trouble Code For Specific Cars

C0463 Hudson Rambler Right Front Sensor Circuit Fault
C0463 Bentley Continental Battery Power Supply ECU Circuit Short To Battery
C0463 Alfa Romeo 1900 ABS Power Relay Output Short Circuit To Battery
C0463 Nissan Almera Climate Control A/C Pressure Switch Circuit Failure
C0463 Audi 920 Ambient Air Temperature Sensor Circuit High
C0463 Lancia Dilambda Speed Wheel Sensor LR Input Short Circuit To Ground
C0463 Hal Tourer Passenger Side Crash Sensor Internal Fault