AUDI A4 1800 DIAGNOSE FAULTS: 8001/P1593/005523

I had a Audi A4 1800 who gave me the following diagnose faults: 8001/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).

As you can see the Ecu cannot pin point the problem, But what I have done is I have replaced the MAF sensor and this cure the problem.

Updated: 20th Jul 2019 — 9:41 am

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