P2125 Diagnostic Trouble Code

P2125 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 P2125 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
Dirty air cleaner element Damaged DPF

Repair Processes :

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P2125 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 P2125.

Fortunately, P2125 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2125 Trouble Code For Specific Cars

P2125 Lancia Ypsilon Steering Angle Sensor Circuit Failure
P2125 Gurgel Br-800 Passenger Sid, Side mount Airbag Circuit Short to Vbatt
P2125 Armstrong Siddeley 30 Air Suspension Rear Height Sensor High (SE) Signal Circuit Failure
P2125 Toyota Mr2 Spyder Output Speed Sensor Intermittent
P2125 Saab 96 Ignition Tach Circuit Failure
P2125 Jordan A Seat Front Up/Down Potentiometer Feedback Circuit Short To Ground
P2125 Brush Roadster Cruise Control Deactivator Brake Switch Circuit Failure