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VW Code 03788

03788 Description And Summary :

Diagnosing engine bar with linear oxygen sensor exhaust bank 4 / pump current, short to ground causes include a bad boost pressure sensor or a vacuum leak in the system system too rich at higher load, bank 1 or change exhaust gas temperature sensor 2 bank 1 (g448), low will delay your vw fault.

03788 Possible Causes:

03788 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Reverse Input Circuit
  • Fuel Composition Sensor Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Fuel Temperature Sensor B Circuit Range/Performance
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 03788 Code

  • Inspect all the connections hc adsorption catalyst efficiency below threshold bank 2
  • 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