P1AF8 Diagnostic Trouble Code

P1AF8 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 P1AF8 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 :

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. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P1AF8 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 P1AF8.

Fortunately, P1AF8 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1AF8 Trouble Code For Specific Cars

P1AF8 Mitsubishi 360 Audio Bezel is Not Responding
P1AF8 Ac Six ABS Hydraulic Brake Switch Circuit Failure
P1AF8 Peugeot Rifter Engine Oil Pressure Sensor/Switch Circuit Malfunction
P1AF8 Maserati 4.24v Transmission Control System MIL Request Circuit Low
P1AF8 Tornado Typhoon Motor Relay # 1 Circuit Short to Battery
P1AF8 Lancia Ypsilon Ii Steering Angle Sensor Circuit Open
P1AF8 Honda Ridgeline I Rear Washer Input Short to Ground