OBD2 Car ScannerWhat does B2479 mean?
B2479 stands for BRAKE PARK SWITCH CIRCUIT SHORT TO GROUND. A body control module has found a fault in a comfort or safety system such as airbags, lights, doors, seats or climate control.
Body codes cover the airbags, seats, lights, doors and comfort systems. When the car's computer sees a reading outside its normal range, it stores this code and may turn on a warning light on the dashboard.
Common causes
- Damaged wiring or a loose connector (often under seats)
- Faulty switch, sensor or motor
- Low battery voltage
- Faulty body control module
What to do
- Read all stored and pending codes with a scanner. Several codes together often point to one cause.
- Note the freeze frame data (speed, temperature, load) recorded when the code was set.
- Inspect the wiring and connectors of the part named in the code for damage, corrosion or looseness.
- Fix the most likely and cheapest cause first, then clear the code and drive to see if it comes back.
Read this code from your own car
Plug in a cheap ELM327 adapter and the app shows every fault code, what it means and how to fix it.
Frequently asked questions
What does B2479 mean?
B2479 means “BRAKE PARK SWITCH CIRCUIT SHORT TO GROUND”. It belongs to the body system group: A body control module has found a fault in a comfort or safety system such as airbags, lights, doors, seats or climate control.
Is it safe to drive with B2479?
You can usually drive carefully for a short time, but fix it soon to avoid further damage or higher fuel use.
How do I clear B2479?
Fix the cause, then clear the code with an OBD2 scanner or app. If the fault is still there, the code will come back.
Related codes
- B2475Passenger Door Unlock Switch Circuit Shorted to Ground
- B2476RADIO PRESENT SWITCH Ckt Failure
- B2477Module Configuration Failure
- B2478ANTI THEFT INPUT SIGNAL SHORT TO GROUND
- B2480LF CORNER LAMP OUTPUT Ckt Short to Battery
- B2481Convertible Top Up/Down switch Fault
- B2482RF CORNER LAMP OUTPUT Ckt Short to Battery
- B2483Enable Signal Open Circuit
Code meanings can vary by manufacturer. This page is general guidance, not a repair manual. Always confirm the cause before replacing parts.