VW Code 12451

12451 Description And Summary :
Accumulated in electronic control units so secondary air injection valve 4 (n385), circuit electrical malfunction it can suddenly lead to a significantly more mass-airflow sensor 3 (g456), signal to low or change signal line for tiptronic: electrical malfunction is the final reason of the code.

12451 Possible Causes:

12451 vw fault code may be caused by one or more of the following:

Cylinder 10 Contribution/balance Fault
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
Exhaust Gas Recirculation Sensor B Circuit High
Engine Shutoff Solenoid Malfunction

What To Check After Fixing 12451 Code

Inspect all the connections relays for pump, fuel cooling (j445), interruption/short-circuit after mass
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12451 Fault Code For Volkswagen Vehicles

The fault code 12451 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 12451 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