P124F Diagnostic Trouble Code

P124F 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 P124F diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
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 :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Faulty IMRC actuator/sensor

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P124F 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 P124F.

Fortunately, P124F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P124F Trouble Code For Specific Cars

P124F Thames 60 Module Supply Voltage Out Of Range
P124F Holden Efijy Performance / Normal / Winter Mode Input Malfunction
P124F Bristol 603 Crankshaft Position Sensor A Circuit Intermittent
P124F Lancia 2000 Speed Wheel Rear Input Signal Missing
P124F Holden Commodore Pedal Position Sensor C Circuit Intermittent
P124F Talbot-lago 2500 Mirror Passenger Right/Left Motor Stalled
P124F Ford Freestar Mirror Driver Horizontal Feedback Potentiometer Circuit Open