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Code P1C49

Quick reference

P1C49 at a glance

Plain-language meaning
This code means that the car's computer detected a problem with the sensor that checks the voltage level of the charger. It's saying the voltage is too high.
Urgency
Moderate – Addressing this issue promptly can prevent further electrical system 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 detected a problem with the sensor that checks the voltage level of the charger. It's saying the voltage is too high.

Explanation

The vehicle's control module is receiving a voltage signal from the charge enable voltage sensor that is higher than expected.

Technical description

The P1C49 code indicates that the Universal Charger Extension Control Module has detected an abnormally high voltage reading from the Charge Enable Voltage Sensor Circuit. This could be due to a malfunctioning sensor, wiring issues, or a problem with the module itself.

Symptoms

• Check engine light is on

• Charging system may not function properly

• Possible reduced vehicle performance

Common Causes

• Faulty charge enable voltage sensor

• Wiring issues or short circuits

• Malfunctioning Universal Charger Extension Control Module

Glossary

Voltage Sensor: A device that measures the electrical voltage in a circuit.

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

Diagnosis steps

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

• Inspect the wiring and connectors for damage or corrosion.

• Test the charge enable voltage sensor for proper operation.

Repair procedures

• Replace the faulty charge enable voltage sensor.

• Repair or replace damaged wiring or connectors.

• Replace the Universal Charger Extension Control Module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Volt

• Nissan Leaf

• Toyota Prius

Preventive measures

• Regularly inspect and maintain vehicle wiring.

• Ensure charging systems are functioning correctly.

• Use recommended charging equipment.

Error code type

Sensor Issue

User experience recommendations

• Avoid using the vehicle's charging system until repaired.

• Consult with a professional mechanic for accurate diagnosis.

Warranty information

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

Historical data

This code has been reported in vehicles with electric or hybrid charging systems, often due to sensor or wiring issues.

Urgency level

Moderate – Addressing this issue promptly can prevent further electrical system problems.

Testing conditions

• Vehicle in park with the ignition on.

• Charging system engaged.

Component location

The charge enable voltage sensor is typically located near the vehicle's charging port or within the charging system module.

FAQs

Q: Can I drive my car with this code?
A: It's not recommended to drive with this code, as it may affect the charging system and vehicle performance.

Q: Is this a common problem?
A: This issue can occur in vehicles with electric or hybrid systems, especially if there are wiring or sensor faults.

Optional diagnostic gear

Tools that may help diagnose P1C49

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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