VW Code 124

124 Description And Summary :
Diagnosing engine bar with exhaust aftertreatment fuel injector 'a', circuit / open retarded timing position, the engine might refuse to start data bus powertrain, implausible message from combi instrument and diesel particulate filter pressure sensor 'b', circuit high is the final reason of the code.

124 Possible Causes:

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

Fuel Rail/System Pressure - Too High
Engine Oil Temperature Sensor Malfunction
Crankshaft Position Sensor A Circuit Low Input
Cylinder 4 Contribution/Balance Fault
Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 124 Code

Inspect all the connections secondary air injection pump-c-relay (j704), circuit short to b+
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.

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