Error code
OBD2 P0579
OBD2P0579
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Cruise Control Multi-Function Input 'A' Circuit Range/Performance.
Severity
moderateCan drive but cruise control may not work properly.
Summary
P0579 indicates an issue with the cruise control system's multi-function switch input A circuit, which affects its range or performance.
Common Causes
- Poor wiring connection
- Faulty multi-function switch
- Mechanical fault
Fixes
FAQ
How can I diagnose P0579?
Use a diagnostic tool like Torque Pro to check the circuit and switch connections.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0500Vehicle Speed Sensor 'A'
- P0501Vehicle Speed Sensor 'A' Range/Performance
- P0502Vehicle Speed Sensor 'A' Circuit Low Input
- P0503Vehicle Speed Sensor 'A' Intermittent/Erratic/High
- P0504Brake Switch 'A'/'B' Correlation
- P0505Idle Air Control System
- P0506Idle Air Control System RPM Lower Than Expected
- P0507Idle Air Control System RPM Higher Than Expected
- P0508Idle Air Control System Circuit Low
- P0509Idle Air Control System Circuit High
- P0510Closed Throttle Position Switch
- P0511Idle Air Control Circuit