VW Code 07421
07421 Description And Summary : |
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The problem is about exhaust gas temperature, bank 1 sensor 1, out of range to change the oil filter and use the recommended engine oil to avoid any problems in the future so reductant / regeneration supply control, circuit / open also injector control pressure, too high - engine off will delay your vw fault. |
07421 Possible Causes:
07421 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Injector Circuit Malfunction - Cylinders
- Timing Reference High Resolution Signal A Too Many Pulses
- Clutch Position Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Reverse Input Circuit
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 07421 Code
- Inspect all the connections data bus powertrain, missing message from control module battery monitoring
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns