P0581low severityPowertrain
Cruise Control Multi-Function Input A Circuit High
on 2022 Audi SQ7 4.0L Twin-Turbo V8 · AWD
What this code means
The PCM sees the cruise control multi-function input A voltage higher than expected. Cruise control functions may be unavailable.
Symptoms
- Cruise control inoperative
- Warning light on
- Unresponsive cruise buttons
Common causes
- Shorted wiring to power
- Faulty cruise control switch
- Corroded connector
- Faulty PCM
Diagnostic steps
- Scan for related codes
- Measure input A voltage
- Inspect wiring for shorts to power
- Test cruise control switch
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