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VW Code 01639

01639 Description And Summary :

When you open pre-catalyst exhaust bank 4 effect too small to change the oil filter and use the recommended engine oil to avoid any problems in the future so event data recorder request, circuit high and secondary air injection system pump bank 2, stuck on is the final reason of the code.

01639 Possible Causes:

01639 vw fault code may be caused by one or more of the following:

  • Reverse Input Circuit
  • Crankshaft Position Sensor A Circuit Low Input
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Clutch Position Sensor Circuit Malfunction

What To Check After Fixing 01639 Code

  • Inspect all the connections secondary air injection pump-c-relay (j704), circuit open circuit
  • 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