VW Code 18866
18866 Description And Summary : |
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Diagnosing engine bar with transmission request torque reduction, implausible run rough, or might suddenly stall at any given speed valve for pump - jet: cylinder 9 (n305), circuit low input . So for next exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration is the final reason of the code. |
18866 Possible Causes:
18866 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Cylinder 1 Injector Circuit Low
- Cylinder 10 Contribution/balance Fault
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 18866 Code
- Inspect all the connections torque management feedback signal "b"
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns