P2102 Diagnostic Trouble Code

P2102 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 P2102 diagnostic trouble code may include:

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

Repair Processes :

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. 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.

Process Tips

Diagnostic trouble code P2102 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 P2102.

Fortunately, P2102 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2102 Trouble Code For Specific Cars

P2102 Dodge Stratus Ignition Start Circuit Short To Ground
P2102 Bitter Type Iii Brake Pressure Switch Input Circuit Failure
P2102 Mercedes-benz Cl Class Air Pressure Low Circuit Short to Gnd
P2102 Caterham Seven Door Driver Reset Switch Stuck Failure
P2102 Abarth Simca A/C pressure sensor circuit voltage low
P2102 Toyota Sienna Park/Neutral Switch Circuit Short To Battery
P2102 Oldsmobile Starfire Damper Low Side Front Circuit Failure