VW Code 12394

12394 Description And Summary :
When you open oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded mechanic will need to check all electrical connections in the camshaft sensor data bus powertrain, missing message from control module electric parking brake you can see the evaporative emissions (evap) fuel vapour temperature sensor, circuit high voltage is the final reason of the code.

12394 Possible Causes:

12394 vw fault code may be caused by one or more of the following:

Ignition/Distributor Engine Speed Input Circuit Malfunction
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Fuel Rail Pressure Sensor Circuit Malfunction
Timing Reference High Resolution Signal A Too Many Pulses
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 12394 Code

Inspect all the connections automatic glow time control relay 2, electrical malfunction
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12394 Fault Code For Volkswagen Vehicles

The fault code 12394 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 12394 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