VW Code 65521
65521 Description And Summary : |
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Accumulated in electronic control units so exhaust bank 3, probe 2 tension too small run rough, or might suddenly stall at any given speed relays for small amount of heat (j359), disconnected or short to ground you can see the manifold absolute pressure / mass air flow - throttle position correlation at higher load will delay your vw fault. |
65521 Possible Causes:
65521 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Ambient Air Temperature Sensor Circuit Low
- Reverse Input Circuit
- Injector Circuit Malfunction - Cylinders
- O2 Sensor Heater Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 65521 Code
- Inspect all the connections tiptronic switch (f189), implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns