U0758 Diagnostic Trouble Code

U0758 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 U0758 diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
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.
Fuel with a large percentage of sulfur will clog the DPF quickly

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. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code U0758 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 U0758.

Fortunately, U0758 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0758 Trouble Code For Specific Cars

U0758 Lada S Shift Solenoid C Control Circuit High
U0758 Fiat V8 Left Lamp Outage Signal Circuit Short to Ground
U0758 Acura Tlx ABS Inlet Valve Coil Rear Circuit Open
U0758 Buick Wildcat Damper LF Circuit Short to Ground
U0758 Jensen Interceptor Seat Driver Recline Rearward Switch Circuit Failure
U0758 Chrysler Chronos Engine RPM Or Speed Limiter Reached
U0758 Ferrari 3z Intake Air Temperature Sensor 2 Circuit