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Code P1C86

Quick reference

P1C86 at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the temperature sensor in the charger. It's like when a thermometer isn't working right, so you can't tell if something is too hot or too cold.
Urgency
Moderate – Charging issues can affect vehicle usability, but it may not immediately disable the vehicle.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
Multimeter, OBD-II scanner, Screwdrivers

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

Laymans terms

This code means that the car's computer has detected a problem with the temperature sensor in the charger. It's like when a thermometer isn't working right, so you can't tell if something is too hot or too cold.

Explanation

The P1C86 code is triggered when the Universal Charger Extension Control Module detects a low voltage signal from the AC Charger Temperature Sensor, indicating a potential issue with the sensor or its circuit.

Technical description

The Universal Charger Extension Control Module monitors the temperature of the AC charger using a temperature sensor. If the sensor reports a voltage that is too low, it indicates a potential malfunction in the sensor itself or an issue with the wiring or connections leading to the sensor.

Symptoms

• Charging system warning light on

• Poor charging performance

• Inability to charge the vehicle

Common Causes

• Faulty AC Charger Temperature Sensor

• Damaged wiring or connectors

• Faulty Universal Charger Extension Control Module

Glossary

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

Multimeter: A tool used to measure electrical voltage, current, and resistance.

Diagnosis steps

• Inspect the AC Charger Temperature Sensor and its wiring for damage.

• Check the sensor's voltage output with a multimeter.

• Test the Universal Charger Extension Control Module for faults.

Repair procedures

• Replace the AC Charger Temperature Sensor if faulty.

• Repair or replace damaged wiring or connectors.

• Replace the Universal Charger Extension Control Module if necessary.

Tools required

• Multimeter

• OBD-II scanner

• Screwdrivers

Estimated repair cost

$100 - $300

Difficulty level

Moderate

Commonly affected vehicles

• Vehicle 1

• Vehicle 2

• Vehicle 3

Preventive measures

• Regularly inspect charging components.

• Ensure all connections are secure.

• Keep the charger and its components clean and dry.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the warning light; get it checked soon.

• Avoid using the charger until the issue is resolved.

Warranty information

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

Historical data

This code has been associated with issues in electric and hybrid vehicles as charging systems became more complex.

Urgency level

Moderate – Charging issues can affect vehicle usability, but it may not immediately disable the vehicle.

Testing conditions

• Vehicle in 'On' position

• Charger connected to the vehicle

Component location

The AC Charger Temperature Sensor is typically located near the charging port or within the charger itself.

FAQs

Q: Can I drive my car with this code?
A: Yes, but it's recommended to get it checked as soon as possible to avoid charging issues.

Q: Will this code affect my car's performance?
A: It may not affect driving performance immediately, but it can impact charging efficiency.

Optional diagnostic gear

Tools that may help diagnose P1C86

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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