B103D Diagnostic Trouble Code

B103D 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 B103D diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Dirty air cleaner element Damaged DPF

Repair Processes :

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. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code B103D 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 B103D.

Fortunately, B103D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B103D Trouble Code For Specific Cars

B103D Lamborghini Marzal Solar Radiation Sensor Circuit Failure
B103D Alfa Romeo Stelvio Air Bag Crash Sensor #2 Ground Circuit Failure
B103D Chrysler Panel Evaporative System Vacuum Test Malfunction
B103D Deep Sanderson 301 Hydraulic Fluid Pressure/ Flow Circuit Short to Vbatt
B103D Trident Clipper Passenger Side Crash Sensor Internal Fault
B103D Borgward 2.3 Litre Control Module VSS Output "A" Malfunction
B103D Toyota Prius 2 Park Brake Actuator Assembly Switch Applied Circuit Short to Gnd