VW Code 65521
65521 Description And Summary : |
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Staring in engine control module 2 for cooling fan, short circuit run rough, or might suddenly stall at any given speed exhaust pressure regulator vent solenoid, control circuit / open also ignition coil cylinder 16, low circuit will delay your vw fault. |
65521 Possible Causes:
65521 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 4 Contribution/Balance Fault
- Reverse Input Circuit
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 65521 Code
- Inspect all the connections hydraulic pressure sensor 1, too high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns