OBD-II code · Powertrain (generic)
P0591 Cruise Control Multi-Function Input B Circuit Range or Performance
Same as P0579 on input B.
Is it safe to drive with P0591?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyResistor ladder drifted
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–1.8 h
- Emissions test
- Usually unaffected
- Parts involved
- Cruise Control Stalk
Related codes
- P0579Cruise Control Multi-Function Input A Circuit Range or Performance
- P058EBattery Monitor Module Temperature Too High
- P058FBattery Monitor Module Temperature Too Low
- P0590Cruise Control Multi-Function Input B Circuit Stuck
- P0592Cruise Control Multi-Function Input B Circuit Low
- P0593Cruise Control Multi-Function Input B Circuit High
- P0594Cruise Control Servo Control Circuit Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.