U1941 Diagnostic Trouble Code

U1941 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 U1941 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Reduction in engine performance, especially at low RPM levels

Possible Causes :

Dirty air cleaner element Damaged DPF
A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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.

Process Tips

Diagnostic trouble code U1941 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 U1941.

Fortunately, U1941 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1941 Trouble Code For Specific Cars

U1941 Seat Exeo Injector Circuit Open / Shorted - Cylinder #6
U1941 Panhard Cd Driver Power Window Down Circuit Short To Ground
U1941 Gsm Flamingo Passenger Sid, Side mount Airbag Circuit Open
U1941 Hyundai Atos Running Board Lamp Circuit Failure
U1941 Peugeot Promethee Engine Coolant Temperature Circuit Intermittent
U1941 Mercedes-benz Cw Air Suspension Compressor Relay Circuit Short To Ground
U1941 Peugeot 308 EGR Calibration Low