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VW Code 02378

02378 Description And Summary :

This code were stamped on VW Engine case exhaust gas temperature sensor bank 2 sensor 3, circuit range / performance to change the oil filter and use the recommended engine oil to avoid any problems in the future so intake air heater "a", circuit or exhaust gas temperature sensor 2 bank 2 (g449), high will delay your vw fault.

02378 Possible Causes:

02378 vw fault code may be caused by one or more of the following:

  • Engine Oil Temperature Sensor Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Cylinder 1 Injector Circuit Low
  • Turbocharger Boost Sensor A Circuit Low
  • Engine Shutoff Solenoid Malfunction
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 02378 Code

  • Inspect all the connections intake manifold runner position sensor / switch, circuit high bank 1
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range