P1597
Speed Control Switch Always Low
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Cruise control doesn't work
- Check Engine Light on Dashboard
- The cruise control system activates spontaneously
- Trouble maintaining the set speed
- Errors in other speed control systems
Causes
- Faulty speed control switch
- Open or short circuit in the switch circuit
- Poor contact in connectors
- Wiring harness damage
- Engine control unit (ECU) malfunction
How to Fix
- Check the speed control switch for mechanical damage
- Check the integrity of the circuit and connectors of the switch
- Measure the resistance of the switch in different positions
- Check the presence of power and ground on the switch
- If necessary, replace the speed control switch