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VW Code 18538

18538 Description And Summary :

This code were stamped on VW Engine case powertrain databus, implausible engine temperature message from inst. causes include a bad boost pressure sensor or a vacuum leak in the system low pressure fuel sensor sensor (g410), implausible signal and wait then secondary air injection pump-c-relay (j704), circuit short to b+ is the final reason of the code.

18538 Possible Causes:

18538 vw fault code may be caused by one or more of the following:

  • Exhaust Gas Recirculation Sensor B Circuit High
  • Cylinder 4 Contribution/Balance Fault
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

What To Check After Fixing 18538 Code

  • Inspect all the connections hydraulic actuator position sender (g302), upper limit exceeded
  • 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

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VW 65200 - 65540 Code Range