P2AB0 Diagnostic Trouble Code

P2AB0 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 P2AB0 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

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. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. 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.

Process Tips

Diagnostic trouble code P2AB0 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 P2AB0.

Fortunately, P2AB0 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2AB0 Trouble Code For Specific Cars

P2AB0 Guy V8 Passenger Side Airbag Fault
P2AB0 Peugeot Rcz Engine Hot Lamp Output Control Circuit Malfunction
P2AB0 Italdesign Orbit SCP (J1850) Lack of Acknowledgment for Telltales
P2AB0 Bmw 1600 Cam Sensor Fault
P2AB0 Proton Arena Fuel Sender Circuit Failure
P2AB0 Oldsmobile Achieva Cylinder 6 Contribution/Balance Fault
P2AB0 Chevrolet Blazer Driver Power Window Down Circuit Short To Battery