U0075 Diagnostic Trouble Code

U0075 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 U0075 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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. 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.

Process Tips

Diagnostic trouble code U0075 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 U0075.

Fortunately, U0075 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0075 Trouble Code For Specific Cars

U0075 Zastava 103
U0075 Peugeot Rc Engine Coolant Temperature Signal Missing/Fault
U0075 Proton Wira Fuel Temperature Sensor #1 Circuit Open
U0075 Mercedes S 400 Air Assist Control Valve Circuit Malfunction
U0075 Opel Insignia Ii Dim Panel Potentiometer Switch Circuit Failure
U0075 Mercedes C Class ABS Inlet Valve Coil Rear Circuit Open
U0075 Chevrolet Equinox 3 Driver's Seat Seatback Autoglide Forward Switch Circuit Short to Ground