logo

VW Code 00400

00400 Description And Summary :

This something to do with the intake camshaft timing injector control pressure sensor, circuit high mechanic will need to check all electrical connections in the camshaft sensor evaporative emissions (evap) fuel vapour temperature sensor, circuit intermittent you can see the linear oxygen sensor exhaust bank 4 / common ground wire, open circuit will delay your vw fault.

00400 Possible Causes:

00400 vw fault code may be caused by one or more of the following:

  • Engine Oil Temperature Sensor Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Cylinder 10 Contribution/balance Fault
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Ambient Air Temperature Sensor Circuit Low
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 00400 Code

  • Inspect all the connections mass-airflow sensor 3 (g456), signal to low
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range