VW Code 15421
15421 Description And Summary : |
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This code were stamped on VW Engine case fuel pump, electronics faulty to change the oil filter and use the recommended engine oil to avoid any problems in the future so water in fuel sensor, circuit high . So for next fuel injection valve 3 (n368), short to ground will delay your vw fault. |
15421 Possible Causes:
15421 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 15421 Code
- Inspect all the connections glow plug control module 2 (j703), electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns