P2103 Diagnostic Trouble Code

P2103 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 P2103 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
Rich or lean exhaust

Possible Causes :

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

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. 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.

Process Tips

Diagnostic trouble code P2103 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 P2103.

Fortunately, P2103 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2103 Trouble Code For Specific Cars

P2103 Mercedes Citan ABS Inlet Valve Coil Rear Circuit Short To Battery
P2103 Volvo 123
P2103 Oldsmobile F-85 Cylinder 9 Injector Circuit Low
P2103 Fiat Doblo Lamp Park Input Circuit Failure
P2103 Renault Ludo Head Lamp Relay Coil Short to Battery
P2103 Mazda Mazda 2 Turbo Pressure Control Solenoid Circuit Malfunction
P2103 Isuzu Bellet SCP (J1850) Invalid or Missing Data for Suspension