garajizOBD-II code · manufacturer-specific
B2457
Aux Heater Coolant Sensor Circuit Open
- System
- B — Body electronics
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does B2457 mean?
B2457 is defined as “Aux Heater Coolant Sensor Circuit Open”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.