P144B Diagnostic Trouble Code

P144B 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 P144B diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Some aftermarket accessories and performance modifications

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P144B 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 P144B.

Fortunately, P144B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P144B Trouble Code For Specific Cars

P144B Vauxhall Vx Pressure Transducer Main / Primary Input Circuit Failure
P144B Nissan 400 Climate Control A/C Lock Sensor Failure
P144B Mg Va Alternative Fuel Controller
P144B Fiat 131 Knock Sensor 2 Circuit Low Input (Bank 2)
P144B Fairthorpe Electron Injector Circuit Malfunction - Cylinder 3
P144B Acura Tsx ABS Inlet Valve Coil Rear Circuit Short To Battery
P144B Suzuki Sx4 I Mirror Driver Switch Assembly Circuit Short To Battery