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VW Code 03040

03040 Description And Summary :

When you open vehicle speed sensor 'b' It could be due to limited air getting through your air intake data-bus powertrain, implausible message from transmission controller you can see the oxygen (lambda) sensor b4 s1, heater return coupling will delay your vw fault.

03040 Possible Causes:

03040 vw fault code may be caused by one or more of the following:

  • Exhaust Gas Recirculation Sensor B Circuit High
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Cold Start Injector 1 Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 03040 Code

  • Inspect all the connections coolant fan 2 (v177), 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