B2BAB Diagnostic Trouble Code

B2BAB 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 B2BAB 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 :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code B2BAB 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 B2BAB.

Fortunately, B2BAB is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2BAB Trouble Code For Specific Cars

B2BAB Proton Juara Fuel Shutoff Valve Control Circuit H igh
B2BAB Suzuki Reno Mirror Driver Horizontal Switch Circuit Open
B2BAB Mazda Mazda 6 Turbocharger Boost Sensor A Circuit High
B2BAB Vaz Calina PRNDL Input #4 Circuit Failure
B2BAB Chevrolet Copper-cooled Driver Side Airbag Fault
B2BAB Infiniti Qx4
B2BAB Ligier Js2 Throttle Position (Narrow Range) Sensor Circuit Malfunction