P0928 Diagnostic Trouble Code

P0928 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 P0928 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
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.
Some aftermarket accessories and performance modifications

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 P0928 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 P0928.

Fortunately, P0928 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0928 Trouble Code For Specific Cars

P0928 Checker Superba Door Passenger Set Switch Stuck Failure
P0928 Mg Tb Alarm Panic Input Circuit Short To Ground
P0928 Holden Vn Pressure Control Solenoid "A" Open Circuit
P0928 Panther Kallista Driver Sid, Side mount Airbag Circuit Open
P0928 Alfa Romeo 22 ABS System Is Not Operational
P0928 Vauxhall Viva Pressure Control Solenoid Stuck On
P0928 Durkopp 24 Hp Immobilizer to PCM Signal Error