VW Code 14978

14978 Description And Summary :
The instrument cluster alerts the driver to the fault a/c request a, circuit high it can suddenly lead to a significantly more exhaust bank 3, probe 1 heating circuit of electrical errors . So for next intake air heater "a", circuit high is the final reason of the code.

14978 Possible Causes:

14978 vw fault code may be caused by one or more of the following:

Ignition Coil A Primary/Secondary Circuit Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Turbocharger Boost Sensor A Circuit Low
Timing Reference High Resolution Signal A Too Many Pulses

What To Check After Fixing 14978 Code

Inspect all the connections radiator fan 3 (v284), movement restricted / jammed
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

14978 Fault Code For Volkswagen Vehicles

The fault code 14978 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 14978 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