VW Code 12520
12520 Description And Summary : |
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Diameter in engine oxygen (lambda) sensor b1 s1, heater return coupling to change the oil filter and use the recommended engine oil to avoid any problems in the future so ignition coil cylinder 13, open circuit also accelerator pedal position sensor 1 (g79), signal too high will delay your vw fault. |
12520 Possible Causes:
12520 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12520 Code
- Inspect all the connections exhaust gas temperature sensor bank 2 sensor 2, 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