VW Code 124

124 Description And Summary :
The problem is about fuel supply heater, control circuit / open run rough, or might suddenly stall at any given speed please check dtc memory of ecu number 2 also relays for pump load air cooling (j536), short-circuit after pluses will delay your vw fault.

124 Possible Causes:

124 vw fault code may be caused by one or more of the following:

Glow Plug/Heater Circuit 'A' Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Injector Circuit Malfunction - Cylinders
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

What To Check After Fixing 124 Code

Inspect all the connections data bus engine/engine, missing message from ecu 2
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

124 Fault Code For Volkswagen Vehicles

The fault code 124 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 124 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

Page 1

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

Page 24