P0758 Diagnostic Trouble Code

P0758 is a kind of OBD-II Diagnostic P-Powertrain 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 P0758 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P0758 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 P0758.

Fortunately, P0758 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0758 Trouble Code For Specific Cars

P0758 Italdesign Medici SCP (J1850) Lack of Acknowledgment for Mirrors
P0758 Buick Regal Cylinder Head Overtemperature Protection Active
P0758 Lola Gt Timing Reference High Resolution Signal B Malfunction
P0758 Locomobile 48 Timing Reference High Resolution Signal A No Pulses
P0758 Diva 10f IAC Monitor Disabled by PSP Switch Failed On
P0758 Subaru Outback LF LAMP HIGH BEAM CIRCUIT Short to Battery
P0758 Mercedes 122f 16hp A/C Temperature Sensor Out of Range