VW Code 07521
07521 Description And Summary : |
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This something to do with the intake camshaft timing injector control pressure sensor, circuit high It could be due to limited air getting through your air intake pressure control solenoid 5 (n233) short to b+ or speed signal error message of the abs controller will delay your vw fault. |
07521 Possible Causes:
07521 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 07521 Code
- Inspect all the connections catalyst system exhaust bank 4, effectiveness too low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns