P058FBattery Monitor Module Temperature Too Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- The battery monitor module (intelligent battery sensor) sits on the negative terminal of the 12 V battery: a shunt measures current, electronics also measure voltage and temperature and calculate state of charge, health and cranking ability, reporting over LIN. Energy management uses the data for alternator control, idle boost and stop-start release, which is why the engine module diagnoses it. GM sets P058A–P058F in its engine modules from 2016 as type B, warning lamp after two trips. P058F means the module reports a temperature below its plausible range: GM sets it below −43 °C in 4 of 5 samples, but only with an outside temperature above −20 °C – so the value is physically implausible, usually an open sensing circuit or faulty sensor. It suspends P058C; the charge voltage then lacks correct temperature compensation.
- What you may notice
- Check engine light on
- Stop-start not available
- No driveability problems
- Likely causes
- LikelyBattery sensor faulty internally (temperature element open)
- RareSensor software or initialisation after power loss
- RareSupply or connector problem at the sensor
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €60 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.