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VW Code 18338

18338 Description And Summary :

When you open coolant circulation pump relay (j151), open circuit retarded timing position, the engine might refuse to start secondary air injection system air flow/pressure sensor bank 1, circuit intermittent / erratic and wait then data bus powertrain, implausible message from control module level control is the final reason of the code.

18338 Possible Causes:

18338 vw fault code may be caused by one or more of the following:

  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Shift Solenoid E Performance or Stuck Off

What To Check After Fixing 18338 Code

  • Inspect all the connections oxygen sensor bank 3 sensor 1, voltage too 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