Powertrain, generic · Vehicle speed, idle control and auxiliary inputs

P058D Battery Monitor Module Voltage Monitoring Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

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. P058D compares the module's voltage with the system voltage measured by the engine module itself: GM sets it above 5 V difference in 32 of 40 samples, its eAssist and stop-start engines at 2 V in 160 of 200. GM bulletins for the 2014–18 Malibu and Impala name loose terminals, ground faults and an overheating dual battery isolation module – with smoke or a burning smell.

Likely causes

Loose or corroded terminal, ground ring or sensor connector
Poor ground, loose splice, fault at the dual battery isolation module
Battery sensor faulty
Weak main or auxiliary battery

Symptoms

  • Check engine light on
  • Stop-start inactive, battery or charge warning
  • Rarely burning smell in the engine bay (GM)

Repair estimate

DifficultyEasyDIY possible
Parts and labour€0–300
Time0.2–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

battery monitor modulebattery terminallin busengine control module

Related codes

P058BP058AP0562P0563P0560

References: gsi.ext.gm.com, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.