OBD-II code · Powertrain (generic)
P0573 Cruise Control/Brake Switch B Circuit High
Cruise Control/Brake Switch B Circuit High: the signal voltage is above the expected range. This affects cruise-control operation.
Is it safe to drive with P0573?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBrake switch defective
- PossibleWiring open
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1 h
- Emissions test
- Usually unaffected
- Parts involved
- Brake Switch, Switch Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.