B2920 Diagnostic Trouble Code

B2920 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 B2920 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
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.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code B2920 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 B2920.

Fortunately, B2920 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2920 Trouble Code For Specific Cars

B2920 Aston Martin Db9 Air Suspension RR Height Sensor Circuit Open
B2920 Suzuki Hayabusa Metering Oil Pump Temperature Sensor Circuit Malfunction
B2920 Chevrolet Avalanche 2 Driver Door Handle Circuit Short To Battery
B2920 Leyland Austin Theft Deterrent Fuel Enable Signal Not Received/ B+ Supply To VCRM A/C Circuit Malfunction
B2920 Tornado Tempest Motor # 2 Input Circuit Short to Vbat
B2920 Talbot Avenger Mirror Passenger Horizontal Switch Circuit Failure
B2920 Hammel Hammel Passenger Side Satellite Communication Circuit Short to Ground