P0AD4 Diagnostic Trouble Code

P0AD4 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 P0AD4 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Faulty IMRC actuator/sensor

Repair Processes :

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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P0AD4 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 P0AD4.

Fortunately, P0AD4 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0AD4 Trouble Code For Specific Cars

P0AD4 Laraki Fulgura System Power Relay Circuit Short to Battery
P0AD4 Nissan Fusion Clutch Position Sensor Circuit High Malfunction
P0AD4 Daewoo Lanos Gate Select Control Error
P0AD4 Crossley 22 Fuel System Leak Detected Small Leak
P0AD4 Toyota Sequoia Park/Neutral Switch Circuit Failure
P0AD4 Proton 400 Fuel Select Switch Malfunction
P0AD4 Isuzu 4200