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VW Code 29021

29021 Description And Summary :

When you open brake switch circuit, error message from engine contr. It could be due to limited air getting through your air intake exhaust turbocharger control module 1 (j724), voltage supply outside permissible range . On the other hand cooling bypass valve 2, exhaust gas recirculation flow, electrical is the final reason of the code.

29021 Possible Causes:

29021 vw fault code may be caused by one or more of the following:

  • Engine Shutoff Solenoid Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Shift Solenoid E Performance or Stuck Off
  • O2 Sensor Heater Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Timing Reference High Resolution Signal A Too Many Pulses

What To Check After Fixing 29021 Code

  • Inspect all the connections generator shut-off, short to b+
  • 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