P2268 Diagnostic Trouble Code

P2268 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 P2268 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P2268 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 P2268.

Fortunately, P2268 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2268 Trouble Code For Specific Cars

P2268 Ferrari C62 Interior Fan Control Circuit Open
P2268 Pag Nick Driver Memory Power Switch Indicator Circuit Short to Battery
P2268 Chrysler Es Evap Emission Control Sys Leak Detected (Gross Leak/No Flow)
P2268 Renault 25 Gear 5 Incorrect ratio
P2268 Lancia Ionos Speed Wheel Sensor RF Input Short Circuit To Battery
P2268 Suzuki Alto Vi Memory 1 Switch Circuit Open
P2268 Turner 803 Pedal Position Sensor C Circuit High Input