VW Code 18978
18978 Description And Summary : |
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This code were stamped on VW Engine case engine coolant temperature sensor 2 (g83), circuit high the system depends on oil pressure to switch between cam profiles cooling bypass valve 2, exhaust gas recirculation flow, electrical and wait then intake manifold runner bank 1 control, basic setting aborted mechanical limit open will delay your vw fault. |
18978 Possible Causes:
18978 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Turbocharger Boost Sensor A Circuit Low
- Crankshaft Position Sensor A Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 18978 Code
- Inspect all the connections exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at upper limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns