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 Plymouth Prowler Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
P2102 Nissan Az-1 Climate Control On/Off Switch Circuit Failure
P2102 Renault Trafic HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P2102 Kia K2700 Seat Switch Reference Voltage Positive Common Supply Voltage Fault
P2102 Mercedes Sl 500 Air Bag Crash Sensor #2 Feed/Return Circuit Short To Battery
P2102 Chrysler Four Evaporative Emission Control System Control Valve
P2102 Bmw Touring Coast Clutch Solenoid Circuit Malfunction