P1BAF Diagnostic Trouble Code

P1BAF 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 P1BAF diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Some aftermarket accessories and performance modifications

Repair Processes :

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. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code P1BAF 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 P1BAF.

Fortunately, P1BAF is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1BAF Trouble Code For Specific Cars

P1BAF Mitsubishi Space Runner Aux Heater Overheat Sensor Circuit Short to Ground
P1BAF Fiat 500 Lamp Air Bag Warning Indicator Circuit Open
P1BAF Brutsch Mopetta Cruise Control Resume Signal Malfunction
P1BAF Riley Sprite Hydraulic Fluid Pressure/ Flow Circuit Short to Vbatt
P1BAF Lotus Exige Traction Control Motor Coherency Fault
P1BAF Ford Comete Low Fan Control Primary Circuit Malfunction
P1BAF Mini Ii ASM Control Circuit Intermittent