U246E Diagnostic Trouble Code

U246E 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 U246E diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. 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 U246E 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 U246E.

Fortunately, U246E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U246E Trouble Code For Specific Cars

U246E Mercedes-benz G Class Air Suspension Disable Switch Circuit Short To Battery
U246E Kissel 8 Servo Motor Potentiometer Airintake Right Circuit Failure
U246E Nissan Sut Current Sense Circuit Failure
U246E Dodge Maxx Ignition Key-In Circuit Short To Ground
U246E Chevrolet Beretta Driver Mirror Power Driver Circuit Short Ground
U246E Cottin-desgouttes 20 Fuel Shutoff Valve Control Circuit Low
U246E Citroen C-crosser Fuel Demand Command Signal Circuit Malfunction