VW Code 17521
17521 Description And Summary : |
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This code were stamped on VW Engine case exhaust gas recirculation flow, excessive detected mechanic will need to check all electrical connections in the camshaft sensor torque management feedback signal "a", low and coolant pump control, circuit range / performance will delay your vw fault. |
17521 Possible Causes:
17521 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Fuel Rail/System Pressure - Too High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 17521 Code
- Inspect all the connections glow plug / heater indicator (k29), circuit short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns