U244C Diagnostic Trouble Code

U244C 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 U244C diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Some aftermarket accessories and performance modifications

Repair Processes :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. 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.

Process Tips

Diagnostic trouble code U244C 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 U244C.

Fortunately, U244C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U244C Trouble Code For Specific Cars

U244C Metallurgique 12 Air Suspension RF Corner Up Timeout
U244C Audi Rs3 ASM Mode Circuit [Perf / Winter / Sport / etc]
U244C Argyll Turbo Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Battery
U244C Nissan X-trail Cylinder #8 High To Low Side Open
U244C Daimler De Headlamp Mode Select Circuit Failure
U244C Nissan Crew Clutch Actuator Circuit Low
U244C Lea-francis Lynx TCIL Circuit Malfunction