VW Code 18856
18856 Description And Summary : |
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Diameter in engine valve for exhaust flap 2 (n322), electrical malfunction It could be due to limited air getting through your air intake reductant injection air pressure sensor 'a', circuit low or change engine coolant level sensor / switch, circuit range / performance is the final reason of the code. |
18856 Possible Causes:
18856 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Turbocharger Boost Sensor A Circuit Low
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Reverse Input Circuit
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 18856 Code
- Inspect all the connections valve 2 for load pressure control (n274), interruption/short-circuit after mass
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns