P0B63 Diagnostic Trouble Code

P0B63 is a kind of OBD-II Diagnostic P-Powertrain 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 P0B63 diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon 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)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P0B63 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 P0B63.

Fortunately, P0B63 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0B63 Trouble Code For Specific Cars

P0B63 Lincoln Mkz Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0B63 Fairthorpe Electrina Injector Circuit Malfunction - Cylinder 2
P0B63 Lincoln Sentinel Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
P0B63 Nissan Cq-x Clutch Actuator Circuit High
P0B63 Hillman Hawk Passenger's Seatback Autoglide Rearward Switch Circuit Short to Ground
P0B63 Talbot Samba Mirror Passenger Left Circuit Open
P0B63 Ford Ka 2 Mirror Driver Right Circuit Short To Battery