VW Code 18404
18404 Description And Summary : |
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The problem is about a/c request a, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system reset-resistant limp-mode active you can see the engine torque reduction, open / short to ground is the final reason of the code. |
18404 Possible Causes:
18404 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Clutch Position Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 18404 Code
- Inspect all the connections oxygen sensor b1 s1: heating circuit regulation at upper limit, lower limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns