P0579
Cruise Control Multi-Function Input A Circuit Range or Performance
Same as P0564 with the analogue level inside the plausible range yet not matching any of the calibrated button levels - resistor ladder drifted, contact resistance increased, or wrong stalk module fitted.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Resistor ladder driftedCommon
Parts involved
- Cruise Control Stalk
P0579 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.