Cruise Control Vacuum Control Circuit Low
The P0583 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the cruise control vacuum control circuit. This circuit controls the vacuum actuator that adjusts the throttle position to maintain set speed. A low voltage reading suggests a short to ground, open circuit, or faulty component, preventing the cruise control from engaging or holding speed properly.
1. Most Common Causes
- Faulty cruise control vacuum control solenoid
- Short to ground in the circuit wiring
- Excessive resistance in the circuit wiring (loose connection or corrosion)
- Blown cruise control circuit fuse
- Faulty cruise control control module
- Failed electric vacuum pump (if equipped)
- Vacuum leak in system hoses
2. Symptoms You Will Notice
- Cruise control inoperative
- Cruise control disengages unexpectedly
- Check Engine Light illuminated
- Cruise control light on dash may flash or stay off
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and note freeze frame data.
Step 2: Visually inspect vacuum control solenoid and wiring for damage or corrosion.
Step 3: Use a multimeter to check voltage at solenoid connector with key on; should be near battery voltage.
Step 4: Test solenoid resistance; compare to manufacturer specs (typically 20-40 ohms).
Step 5: Check for continuity to ground on control circuit; if shorted, repair wiring.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, the vehicle is safe to drive, but cruise control will not function. The code does not affect normal driving or engine performance.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150, including parts (solenoid) and labor. Wiring repairs may be less, while PCM replacement is more expensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.