U1741 Diagnostic Trouble Code

U1741 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 U1741 diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code U1741 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 U1741.

Fortunately, U1741 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1741 Trouble Code For Specific Cars

U1741 Citroen Gs Fuel Level Sensor Circuit Range/Performance
U1741 Mazda Premacy 3-2 Downshift Error
U1741 Ferrari 612 Intake Valve Control Solenoid Circuit High (Bank 2)
U1741 Porsche Cayman Fuel Pump Driver Module Off Line
U1741 Fiat Panda 1 Lamp Turn Signal Right Circuit Failure
U1741 Mitsubishi Sss Auxillary Speed Sensor Fault
U1741 Mg K3 Air Suspension RR Height Sensor Circuit Open