VW Code 18789
18789 Description And Summary : |
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The problem is about reductant injection air pump control, circuit / open the system depends on oil pressure to switch between cam profiles a/c request a, circuit and turbocharger boost control position sensor, circuit low will delay your vw fault. |
18789 Possible Causes:
18789 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor A Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 18789 Code
- Inspect all the connections data-bus powertrain, missing message from fuel injection pump
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns