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Code P2E86

Quick reference

P2E86 at a glance

Plain-language meaning
This means the car's computer is getting a signal that the battery charger is seeing too much voltage. It's like when a toy gets too many batteries and it doesn't work right.
Urgency
Moderate – It should be addressed soon to avoid further electrical issues.
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 means the car's computer is getting a signal that the battery charger is seeing too much voltage. It's like when a toy gets too many batteries and it doesn't work right.

Explanation

The code P2E86 indicates that the voltage reading from the Battery Charger B input is higher than expected, suggesting a potential issue with the sensor or the circuit.

Technical description

The P2E86 code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the Battery Charger B input voltage sensor circuit. This could be due to a malfunctioning sensor, wiring issues, or a problem with the battery charger itself.

Symptoms

• Check Engine Light is on

• Battery not charging properly

• Electrical system malfunctions

Common Causes

• Faulty battery charger

• Wiring issues in the sensor circuit

• Defective voltage sensor

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

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

• Inspect the wiring and connections of the Battery Charger B circuit.

• Test the voltage sensor for proper operation.

Repair procedures

• Repair or replace damaged wiring.

• Replace the faulty voltage sensor.

• Replace or repair the battery charger if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$100 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Nissan Leaf

• Toyota Prius

Preventive measures

• Regularly check battery and charging system.

• Ensure all electrical connections are secure.

• Perform routine maintenance on the vehicle's electrical system.

Error code type

Sensor Issue

User experience recommendations

• Have the vehicle inspected by a professional.

• Avoid using electrical components until the issue is resolved.

Warranty information

Check with the vehicle manufacturer for warranty coverage on electrical components.

Historical data

This code has been associated with hybrid and electric vehicles due to their complex charging systems.

Urgency level

Moderate – It should be addressed soon to avoid further electrical issues.

Testing conditions

• Vehicle in a safe, stationary position.

• Battery charger connected and operational.

Component location

The battery charger and its sensors are typically located near the vehicle's battery pack.

FAQs

Q: Can I drive with the P2E86 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to battery or electrical system issues.

Q: How do I reset the P2E86 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.

Optional diagnostic gear

Tools that may help diagnose P2E86

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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