P058E — Battery Monitor Module Temperature Too High

P058E: The battery-monitor module temperature is too high.

Meaning, symptoms, causes and checks

The battery-monitor module temperature is too high. The definition refers to the module's temperature and should not be rewritten as a direct battery-temperature fault.

Affected system: Powertrain

Symptoms

  • Warning light may illuminate
  • Related system function may be impaired
  • Vehicle-specific symptoms vary

Possible causes

  • Low or unstable supply voltage, fuse or relay fault, poor ground, or wiring damage
  • Related wiring, connector, power or ground fault
  • Vehicle-specific mechanical or control issue

What to check

  • Record stored and pending codes and freeze-frame data
  • Measure battery and charging voltage under load and compare with scan data; test the named circuit, fuse, relay, grounds and connectors.
  • Confirm measured values against the vehicle service information
  • Retest under the conditions that set the code
  • Measure battery and charging voltage under load and compare with scan data; test the named circuit, fuse, relay, grounds and connectors.
  • Repair the verified cause and confirm the code does not return

Also written as: P058E-00, P058E00, PO58E (some scan tools add the fault-type byte, e.g. -00).