VW Code 18781
18781 Description And Summary : |
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The problem is about exhaust gas temperature sensor, bank 1 sensor 4, circuit high mechanic will need to check all electrical connections in the camshaft sensor sensor 2 for hydraulic pressure in transmission, open or short to b+ also ignition coil 'k' primary control, short to plus is the final reason of the code. |
18781 Possible Causes:
18781 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Fuel Temperature Sensor B Circuit Range/Performance
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 18781 Code
- Inspect all the connections exhaust bank 1 sensor 1 o2 sensor signal, implausibly rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns