U0144 Diagnostic Trouble Code

U0144 is a kind of OBD-II Diagnostic U-Network 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 U0144 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code U0144 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 U0144.

Fortunately, U0144 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0144 Trouble Code For Specific Cars

U0144 Chevrolet Triax Engine Coolant Level Switch Circuit Failure, GEM
U0144 Nissan 110 Charging System Fault
U0144 Pininfarina Hit ESO - Engine Shut Off Solenoid Fault
U0144 Puma Gte Fuel Temperature Sensor #2 Circuit Failure
U0144 Suzuki Sx4 Mirror Driver Switch Assembly Circuit Open
U0144 Renault Talisman HO2S Heater Control Circuit (Bank 2 Sensor 1)
U0144 Bmw 2600 CAN Communication Bus Fault