B2108 Diagnostic Trouble Code

B2108 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 B2108 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
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code B2108 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 B2108.

Fortunately, B2108 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2108 Trouble Code For Specific Cars

B2108 Royce 10 Hp Ignition Key-In Circuit Short To Ground
B2108 Alvis Ta21 Air Pressure Low Circuit Short to Gnd
B2108 Toyota Conquest O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
B2108 Volkswagen California Reverse Engagement Error
B2108 Bentley 3.5-litre Battery Heater Circuit Failure
B2108 Mercedes Glc Accelerometer Rear Circuit Short To Ground
B2108 Honda Sm-x Remote Open/Close signal Circuit Short to Ground