C0124 Diagnostic Trouble Code

C0124 is a kind of OBD-II Diagnostic C-Chassis 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 C0124 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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 C0124 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 C0124.

Fortunately, C0124 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0124 Trouble Code For Specific Cars

C0124 Subaru 1400 Lateral Accelerometer Sensor Circuit Open
C0124 Dkw 3 Idle Air Control Overspeed Error
C0124 Volkswagen 1-litre Rear Fog Lamp Switch Circuit Failure
C0124 Zaz Jalta SCP (J1850) Invalid or Missing Data for Vehicle Speed Control
C0124 Holden Rc Colorado Power To A/C Clutch Circuit Overcurrent
C0124 Renault 40 Gear Lever X - Y Position Sensor Circuit
C0124 Opel Meriva Door Ajar Circuit Short To Battery