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Code P1458

Quick reference

P1458 at a glance

Plain-language meaning
This code means your car's computer is having trouble talking to a sensor that checks the battery. It's like when your phone can't connect to Wi-Fi.
Urgency
Moderate – Addressing this issue can prevent 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 your car's computer is having trouble talking to a sensor that checks the battery. It's like when your phone can't connect to Wi-Fi.

Explanation

The P1458 code indicates a problem with the communication between the vehicle's onboard computer and the second battery sensor. This sensor monitors the battery's condition.

Technical description

The P1458 code is triggered when the powertrain control module (PCM) detects an issue with the extended communication circuit of the second battery sensor. This could be due to a fault in the wiring, sensor, or PCM itself.

Symptoms

• Check Engine Light illuminated

• Battery warning light on

• Possible battery charging issues

Common Causes

• Faulty battery sensor

• Damaged or corroded wiring or connectors

• Malfunctioning PCM

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics, Second Generation

Diagnosis steps

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

• Inspect the battery sensor and its wiring for damage.

• Test the sensor's functionality with a multimeter.

Repair procedures

• Replace the faulty battery sensor.

• Repair or replace damaged wiring or connectors.

• Reprogram or replace the PCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Honda Civic

• Honda Accord

• Acura MDX

Preventive measures

• Regularly inspect battery and sensor connections.

• Keep battery terminals clean and free of corrosion.

• Ensure proper battery maintenance.

Error code type

Sensor Issue

User experience recommendations

• Have the battery and sensors checked regularly.

• Address any warning lights promptly to avoid further issues.

Warranty information

Check with your vehicle's manufacturer for warranty coverage on electrical components.

Historical data

This code has been reported in vehicles with aging electrical systems, often linked to battery maintenance issues.

Urgency level

Moderate – Addressing this issue can prevent battery-related problems.

Testing conditions

• Vehicle at operating temperature

• Battery fully charged

Component location

The battery sensor is typically located near the battery, often attached to the battery terminal or within the battery management system.

FAQs

Q: Can I drive with a P1458 code?
A: It's possible, but not recommended. You may experience battery issues, so it's best to have it checked.

Q: How do I reset the P1458 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.

Optional diagnostic gear

Tools that may help diagnose P1458

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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