OBD
P0595
Cruise Control Servo Control Circuit Low
What it means
P0595 means Cruise Control Servo Control Circuit Low.
Check these first
- A short to ground in the servo wiring
- A shorted cruise control servo motor
- Low battery voltage
- Water in the servo connector
- A PCM fault
What to do next
- Check battery voltage
- Test the servo circuit for a short to ground
- Inspect the servo connector for water damage
- Test the servo motor
- Replace the servo motor if the circuit stays low
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.