P058A
Battery Monitor Module Performance
Battery Monitor Module Performance: the component is electrically intact but its response does not match the command. The module reports battery current, voltage and temperature for charge management.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Module reads with driftCommon
- Module software outdated, reflash may resolveLess likely
- Supply voltage outside specificationLess likely
Parts involved
- Battery Monitor Module
P058A 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.