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Code P058B

Quick reference

P058B at a glance

Plain-language meaning
This code means that the car's computer is having trouble keeping track of the battery's power usage. It's like when your phone can't tell how much battery is left.
Urgency
Moderate – While the vehicle may still operate, it is important to address this issue to prevent potential battery-related problems.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble keeping track of the battery's power usage. It's like when your phone can't tell how much battery is left.

Explanation

The vehicle's battery monitor module is responsible for tracking the current flow to and from the battery. If it detects an issue with this monitoring, it triggers the P058B code.

Technical description

The P058B code indicates that the Battery Monitor Module has detected a performance issue with its ability to accurately monitor the current flowing into and out of the battery. This could be due to a malfunction in the module itself or an issue with the wiring or connections.

Symptoms

• Check engine light is on

• Battery warning light may be illuminated

• Possible battery charging issues

Common Causes

• Faulty battery monitor module

• Poor electrical connections

• Wiring issues

Glossary

OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.

Battery Monitor Module: A component that tracks the battery's current flow and performance.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the battery monitor module and its connections.

• Check the wiring for any signs of damage or corrosion.

Repair procedures

• Replace the battery monitor module if faulty.

• Repair or replace damaged wiring.

• Ensure all electrical connections are clean and secure.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly check battery connections.

• Ensure wiring is in good condition.

• Perform routine battery maintenance.

Error code type

Sensor Issue

User experience recommendations

• If the check engine light is on, have the vehicle inspected as soon as possible.

• Avoid running high electrical loads until the issue is resolved.

Warranty information

Check with your vehicle manufacturer for specific warranty coverage related to electrical components.

Historical data

This code has been associated with vehicles that have experienced battery monitoring issues due to aging electrical systems.

Urgency level

Moderate – While the vehicle may still operate, it is important to address this issue to prevent potential battery-related problems.

Testing conditions

• Vehicle engine running

• Battery fully charged

Component location

The battery monitor module is typically located near the battery or integrated within the battery management system.

FAQs

Q: What happens if I ignore this code?
A: Ignoring this code can lead to battery performance issues and potential vehicle breakdowns.

Q: Can I drive with the P058B code?
A: While the vehicle may still be drivable, it is recommended to address the issue to avoid potential battery problems.

Optional diagnostic gear

Tools that may help diagnose P058B

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

View on Amazon
Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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