VW Code 12521
12521 Description And Summary : |
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When you open vehicle speed signal, circuit short to ground mechanic will need to check all electrical connections in the camshaft sensor exhaust gas temperature sensor, bank 1 sensor 5, circuit intermittent / erratic also diesel particulate filter pressure sensor 'b', circuit low will delay your vw fault. |
12521 Possible Causes:
12521 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Cylinder 10 Contribution/balance Fault
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Turbocharger Boost Sensor A Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 12521 Code
- Inspect all the connections intake manifold runner bank 1 control, basic setting aborted mechanical limit closed
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns