P063A Diagnostic Trouble Code

P063A 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 P063A diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
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)
Dirty air cleaner element Damaged DPF

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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 P063A 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 P063A.

Fortunately, P063A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P063A Trouble Code For Specific Cars

P063A Chevrolet Uplander Engine Coolant Level Switch Circuit Short to Ground
P063A Isuzu 4200
P063A Lada Tarzan Shift Solenoid C Control Circuit Range/Performance
P063A Fiat Esv Lamp Seat Belt Circuit Short To Battery
P063A Sovam 1100 Lamp Backup Switch Input Circuit Open
P063A Mercury Antser Air Suspension LF Height Sensor Circuit Open
P063A Smart Fortwo Ii Lamp Anti-Theft Indicator Circuit Failure