ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Find Your OBD2 Code Fast

Type the code from your scanner to get causes, symptoms, and fixes.

Code P1C90

Quick reference

P1C90 at a glance

Plain-language meaning
This code means that the car's computer is getting a signal from the charging station that's too high. It's like when you turn the volume up too loud on your headphones, and it starts to hurt your ears.
Urgency
High – This issue can prevent the vehicle from charging properly, which is critical for electric vehicles.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
Multimeter, OBD-II scanner, 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 getting a signal from the charging station that's too high. It's like when you turn the volume up too loud on your headphones, and it starts to hurt your ears.

Explanation

The vehicle's control module has detected a higher than expected voltage signal from the charging station interface.

Technical description

The P1C90 code is triggered when the vehicle's charging system detects an abnormally high voltage input from the charging station. This could be due to a malfunction in the charging interface module or a problem with the charging station itself.

Symptoms

• Charging issues

• Warning light on the dashboard

• Inability to charge the vehicle

Common Causes

• Faulty charging station

• Damaged charging cable

• Defective loading interface module

Glossary

Loading Interface Module: A component that manages the connection between the vehicle and the charging station.

OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics in vehicles.

Diagnosis steps

• Inspect the charging cable for damage.

• Test the charging station with another vehicle.

• Check the loading interface module for faults.

Repair procedures

• Replace the charging cable if damaged.

• Repair or replace the loading interface module.

• Consult with the charging station provider for potential issues.

Tools required

• Multimeter

• OBD-II scanner

• Basic hand tools

Estimated repair cost

$100 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Vehicle 1

• Vehicle 2

• Vehicle 3

Preventive measures

• Regularly inspect charging equipment for damage.

• Ensure charging stations are properly maintained.

• Avoid using damaged charging cables.

Error code type

Sensor Issue

User experience recommendations

• Avoid using the vehicle until the issue is resolved.

• Seek professional assistance for diagnosis and repair.

Warranty information

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

Historical data

This code has been associated with charging issues in electric and hybrid vehicles as charging technology has evolved.

Urgency level

High – This issue can prevent the vehicle from charging properly, which is critical for electric vehicles.

Testing conditions

• Vehicle connected to a charging station

• Charging system active

Component location

The loading interface module is typically located near the vehicle's charging port.

FAQs

Q: Can I drive my car with this code?
A: It's not recommended to drive the vehicle until the issue is resolved, as it may not charge properly.

Q: Will this code clear itself?
A: The code may clear if the issue is resolved, but it's best to have it diagnosed and repaired.

Optional diagnostic gear

Tools that may help diagnose P1C90

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
🌙