B15C2 Navigation unit sees a mismatch between GPS data and the speed signal
What does B15C2 mean on a Toyota?
B15C2. Navigation unit sees a mismatch between GPS data and the speed signal. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B15C2
- Failed combination meter assembly
- Speed signal circuit open or shorted
- Poor electrical connection
- Failed navigation receiver assembly
- Damaged speed signal harness
How to fix B15C2
- Confirm the code and compare speed data
- Inspect and reseat the meter and receiver connectors
- Test the speed signal circuit
- Check the navigation antenna signal
- Replace the failed part only after tests fail