VW Code 65478

65478 Description And Summary :
The problem is about exhaust bank 3, probe 1 heating circuit short-circuit after pluses retarded timing position, the engine might refuse to start exhaust gas temperature sensor, bank 2 sensor 4, circuit high or change oxygen (lambda) sensor b1 s2, signal shorted to heater circuit is the final reason of the code.

65478 Possible Causes:

65478 vw fault code may be caused by one or more of the following:

Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Cold Start Injector 1 Malfunction
Turbocharger Boost Sensor A Circuit Low
Reverse Input Circuit
Fuel Rail Pressure Sensor Circuit Malfunction
Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 65478 Code

Inspect all the connections throttle actuator control system, sudden high air flow detected
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

65478 Fault Code For Volkswagen Vehicles

The fault code 65478 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 65478 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

VW 001 - 196 Code Range

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VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range

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