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

Commentary
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).