VW Code 13940
13940 Description And Summary : |
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This code were stamped on VW Engine case signal 'door up' not recognized run rough, or might suddenly stall at any given speed data bus powertrain, no communication and wait then secondary air injection pump-d-relay (j705), circuit short to b+ will delay your vw fault. |
13940 Possible Causes:
13940 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 13940 Code
- Inspect all the connections vacuum reservoir pressure sensor, 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