P058A
Battery Monitor Module Performance
Generic OBD-II
Real-world scan data
Seen in
20
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check the battery connections and ensure they are secure
- Test the battery voltage and replace if below the recommended levels
- Inspect the battery terminals for corrosion and clean if necessary
- Verify the operation of the battery monitor module and replace if faulty
- Consult the vehicle's technical service manual for further diagnostic steps
Common causes
Most likely first
- Weak or faulty battery
- Poor electrical connections or loose battery cables
- Faulty battery monitor module
- Malfunctioning alternator
- Inadequate charging of the battery
How to diagnose & fix
Work through it in order
- Battery fails to hold a charge
- Difficulty starting the vehicle
- Dimming or flickering headlights
- Electrical system malfunctions
- Engine misfires or stalls
Read & clear P058A yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.