VW Code 18978
18978 Description And Summary : |
|---|
Accumulated in electronic control units so exhaust bank 1/2 lambda probes before kat exchanges causes include a bad boost pressure sensor or a vacuum leak in the system data bus engine/engine, missing message from ecu 1 and transmission mount valve 2 (n263), short to ground is the final reason of the code. |
18978 Possible Causes:
18978 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 18978 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 2, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns