P2279 Diagnostic Trouble Code

P2279 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 P2279 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Engine surge

Possible Causes :

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

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

Process Tips

Diagnostic trouble code P2279 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 P2279.

Fortunately, P2279 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2279 Trouble Code For Specific Cars

P2279 Secma F16 Insufficient Coolant Temperature for Closed Loop Fuel Control
P2279 Noble M12 Cylinder 10 Contribution/balance Fault
P2279 Saleen S Ignition/Distributor Engine Speed Input Circuit No Signal
P2279 Tsukuba Sedan Pedal Forward / Rearward Motor Stalled
P2279 Glas 1500 Overdrive switch circuit short to Vbatt
P2279 Mitsubishi Hsr-v Autolamp On Circuit Short To Battery
P2279 Chrysler 300m Engine Oil Temperature Sensor High