B2944 Diagnostic Trouble Code

B2944 is a kind of OBD-II Diagnostic B-Body 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 B2944 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. 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. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code B2944 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 B2944.

Fortunately, B2944 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2944 Trouble Code For Specific Cars

B2944 Porsche 986 Fuel level Sensor Circuit Low Input
B2944 Oldsmobile Anthem Cylinder 6 Misfire Detected
B2944 Daimler 3-litre Hazard Flash Output Circuit Open
B2944 Volkswagen Sedan SCAIR Solenoid Circuit Malfunction
B2944 Plymouth Turismo Exhaust Gas Recirculation Flow Excessive Detected
B2944 Toyota Celsior O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
B2944 Buick 70 Cylinder 4 Injector Circuit Low