OBD-II code · Body
B0520 Passenger Door Open Switch
The body control module has detected a fault in the passenger door open (jamb) switch. Same fault profile as B0510 but for the passenger door.
Is it safe to drive with B0520?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDoor jamb switch stuck or corroded
- PossibleWiring open in door hinge
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Door Jamb Switch, Door Wiring Harness, Body Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.