VW Code 07521
07521 Description And Summary : |
|---|
This code were stamped on VW Engine case power supply (b+) terminal 15, voltage too high It could be due to limited air getting through your air intake 'b' rocker arm actuator system, performance or stuck off . On the other hand valve for pump - jet: cylinder 10 (n306), regulation range exceeded will delay your vw fault. |
07521 Possible Causes:
07521 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor B Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Turbocharger Boost Sensor A Circuit Low
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 07521 Code
- Inspect all the connections event data recorder request, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns