P058E
Battery Monitor Module Temperature Too High
The battery monitor module measures battery temperature above the safe upper threshold - charging is derated or stopped to prevent thermal runaway. Causes are heat soak from a hot engine bay, hard charging on a depleted battery, or a faulty sensor.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Heat soak from engine bayCommon
Parts involved
- Battery Monitor Module
- Battery Thermal Management
P058E is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.