P176E Diagnostic Trouble Code

P176E 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 P176E 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
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. 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 P176E 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 P176E.

Fortunately, P176E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P176E Trouble Code For Specific Cars

P176E Renault 4 Gear Lever Push - Pull Switch (Shift Anticipate)
P176E Renault Manager Head Rest Switch Circuit Failure
P176E Saab 90 Ignition Run/Start Circuit Failure
P176E Skoda 1100 IVC Solenoid Circuit Malfunction
P176E Lotus 16 Torque Converter Clutch Circuit Stuck On
P176E Buick Lacrosse Cylinder 8 Injector Circuit High
P176E Honda Ssm RESCU/VEMS Input Circuit Short to Battery