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18001/P1593/005523 - Altitude Adaptation: Signal Out of Tolerance

Possible Symptoms

  • Unknown


This is one of those fault codes where the ECU knows something is amiss, but cannot pinpoint the cause.

Possible Causes

  • MAF sensor (G70) out of tolerance.
  • Leak in intake system.
  • Throttle position sensors (G187/G188) out of tolerance.

Possible Solutions

  • Check MAF/replace MAF Sensor (G70).
  • Check intake systems for leaks and repair.
  • Check Throttle position sensors (G187/G188).