VW Code 10421

10421 Description And Summary :
Staring in engine drive by wire-mil (k132), circuit electrical malfunction It could be due to limited air getting through your air intake mass-airflow sensor 3 (g456), signal to high and please check coding of ecus in data bus powertrain is the final reason of the code.

10421 Possible Causes:

10421 vw fault code may be caused by one or more of the following:

Ignition/Distributor Engine Speed Input Circuit Malfunction
Cylinder 1 Injector Circuit Low
Crankshaft Position Sensor B Circuit Malfunction
Exhaust Gas Recirculation Sensor B Circuit High
Fuel Temperature Sensor B Circuit Range/Performance
Injector Circuit Malfunction - Cylinders
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 10421 Code

Inspect all the connections intake flap motor 2 (v275), 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

10421 Fault Code For Volkswagen Vehicles

The fault code 10421 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 10421 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