OBD-II code · Powertrain (generic)
P0581 Cruise Control Multi-Function Input A Circuit High
Same as P0564 with the analogue input voltage above the plausible range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0581?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal shorted to supply
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.2 h
- Emissions test
- Usually unaffected
- Parts involved
- Cruise Control Stalk
Related codes
- P0593Cruise Control Multi-Function Input B Circuit High
- P057EBrake Pedal Position Sensor A Circuit Intermittent or Erratic
- P057FBattery A State of Charge Performance
- P0580Cruise Control Multi-Function Input A Circuit Low
- P0582Cruise Control Vacuum Control Circuit Open
- P0583Cruise Control Vacuum Control Circuit Low
- P0584Cruise Control Vacuum Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.