VW Code 00420
00420 Description And Summary : |
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The instrument cluster alerts the driver to the fault relays for large amount of heat (j360), short-circuit after pluses the system depends on oil pressure to switch between cam profiles performance malfunction in cooling system you can see the exhaust bank 1 mixture adaptation range 3, rich limit exceeded will delay your vw fault. |
00420 Possible Causes:
00420 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Rail Pressure Sensor Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Oil Temperature Sensor Malfunction
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 00420 Code
- Inspect all the connections secondary air injection system air flow/pressure sensor bank 1, 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