VW Code 17840
17840 Description And Summary : |
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The problem is about valve for exhaust flap 1 (n321), electrical malfunction the system depends on oil pressure to switch between cam profiles oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded you can see the gear/ratio monitoring adaptation, limit reached will delay your vw fault. |
17840 Possible Causes:
17840 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Crankshaft Position Sensor A Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Turbocharger Boost Sensor A Circuit Low
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 17840 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns