P268E Diagnostic Trouble Code

P268E 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 P268E diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
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
Some aftermarket accessories and performance modifications

Repair Processes :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. 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 you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code P268E 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 P268E.

Fortunately, P268E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P268E Trouble Code For Specific Cars

P268E Steyr Type 220 Lamp Turn Signal Front Output Circuit Open
P268E Chevrolet Tracker Emergency & Road Side Assistance Switch Circuit Short to Ground
P268E Holden Statesman Power Window LR Motor Circuit Open
P268E Riley Kestrel Horn Switch Circuit Failure
P268E Lancia Artena Speed Wheel Sensor LF Circuit Open
P268E Isuzu I-350
P268E Atalanta 2-litre Air Temperature Internal Sensor Circuit Failure