P3144 Diagnostic Trouble Code

P3144 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 P3144 diagnostic trouble code may include:

Faulty or damaged wiring
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
Poor fuel economy
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. 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 P3144 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 P3144.

Fortunately, P3144 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P3144 Trouble Code For Specific Cars

P3144 Toyota Sports Passenger Door Ajar Circuit Failure
P3144 Jaguar S-type Seat Driver Front Down Circuit Short To Ground
P3144 Ferrari 196 Injector High Side Open - Bank 1
P3144 De Soto De Luxe Hood Switch Circuit Failure
P3144 Lorraine Dietrich Le Mans Torque Converter Clutch Circuit Electrical
P3144 Hillman Avenger Passenger's Seatback Autoglide Forward Switch Circuit Short to Ground
P3144 Pontiac Star Chief Flash To Pass Switch Circuit Short To Ground