B269F Diagnostic Trouble Code

B269F is a kind of OBD-II Diagnostic B-Body 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 B269F 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
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. 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. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code B269F 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 B269F.

Fortunately, B269F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B269F Trouble Code For Specific Cars

B269F Porsche 917 Fuel Composition Sensor Circuit Range/Performance
B269F Fso Polonez O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
B269F Subaru Forester 2 Left Front Wheel Pressure Reduction Performance Problem
B269F Monteverdi 375 Battery Power Relay Circuit Failure
B269F Spyker 30 Lamp Dome Input Circuit Failure
B269F Mazda 600 Transmission Transfer Case Contact Plate 'D' Circuit Failure
B269F Hummer H2 Right Tail Lamp Circuit Failure