P0944 Diagnostic Trouble Code

P0944 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 P0944 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P0944 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 P0944.

Fortunately, P0944 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0944 Trouble Code For Specific Cars

P0944 Fso Polonez O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0944 Chrysler Town & Country V Exhaust Pressure Control Valve Malfunction
P0944 Ford Zodiac Motor Relay # 1 Circuit Short to Battery
P0944 Trabant 1.1 Passenger Sid, Side mount Airbag Circuit Open
P0944 Chevrolet Caprice 8 Driver Power Window One Touch Window Relay Circuit Failure
P0944 Nsu Wankel Cylinder 2 Injector Circuit High
P0944 Chevrolet Hhr Dual Alternator Upper Fault