P08AA Diagnostic Trouble Code

P08AA 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 P08AA diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
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.
Some aftermarket accessories and performance modifications

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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P08AA 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 P08AA.

Fortunately, P08AA is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P08AA Trouble Code For Specific Cars

P08AA Tvr Trident Power Steering Pressure sensor Circuit Intermittent
P08AA Sunbeam-talbot Tiger Memory #1 output Short to Ground
P08AA Ford Tickford Mirror Switch Assembly Circuit Failure
P08AA Ford Escort Master Cylinder Pressure Sensor Circuit Open
P08AA Ferrari 375 Intake Air Temperature Circuit Range/Performance Problem
P08AA Austin Marina Autolamp Sensor Input Circuit Short To Ground
P08AA Mitsubishi Dingo Audio Voice Module Not Responding