U2246 Diagnostic Trouble Code

U2246 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 U2246 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
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)
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. 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. 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 U2246 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 U2246.

Fortunately, U2246 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U2246 Trouble Code For Specific Cars

U2246 Nissan Elgrand Clutch Pedal Switch B Circuit High
U2246 Daihatsu Leeza Gear Shift Reverse Actuator Circuit Low
U2246 Fiat X1 Left Rear Backup Lamp Circuit Failure
U2246 Toyota 1000 Multi-faults - Bank 2 - With Low Side Shorts
U2246 Mg Ex-e Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Battery
U2246 Saturn Sl Incorrect Module Design Level
U2246 Volkswagen Caddy Remote Open/Close signal Circuit Short to Ground