P0579
Cruise Control Multifunction Input A Circuit Range/Performance
Generic code
Vehicle Speed and Idle Control System
Low severity
Hard repair
Free on OBD DashX
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What P0579 means
- The fault code P0579 indicates that there is an issue with the input circuit of the cruise control multi-function switch A, which is producing a higher than expected voltage. This can lead to the cruise control system malfunctioning or failing entirely.
Possible symptoms
- Malfunctioning cruise control system
- Illuminated cruise control warning light
- Inoperative cruise control system
- Harsh shifting of the transmission
Possible causes
- Faulty cruise control switch
- Damaged wiring or connections in the cruise control system circuit
- Malfunctioning cruise control module
- Failed engine control module (ECM)
Related parts
- Cruise Control Circuit: Cruise control automatically controls the speed of a car by maintaining a steady speed as set by the driver. Problems lead to car not able to cruise at a constant speed
Possible solutions
- Replace the faulty cruise control switch
- Check and repair any damaged wiring or connections in the cruise control system circuit
- Replace the malfunctioning cruise control module
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0579 on OBD DashX
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