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Code P1C5C

Quick reference

P1C5C at a glance

Plain-language meaning
This code means that the car's computer thinks the temperature sensor for the charging system is reading a temperature that's too low.
Urgency
Moderate – It should be addressed soon to ensure proper charging system function.
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 thinks the temperature sensor for the charging system is reading a temperature that's too low.

Explanation

The vehicle's control module has detected an unusually low temperature reading from the cooling system temperature sensor in the universal charger extension control module.

Technical description

The P1C5C code is triggered when the cooling system temperature sensor circuit in the universal charger extension control module reports a temperature that is below the expected range. This could indicate a sensor malfunction, wiring issue, or actual low temperature condition.

Symptoms

• Check engine light on

• Charging system performance issues

• Vehicle may not charge properly

Common Causes

• Faulty temperature sensor

• Wiring issues or poor connections

• Faulty control module

Glossary

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

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Inspect the temperature sensor and its wiring

• Test the sensor with a multimeter for proper resistance

Repair procedures

• Replace the faulty temperature sensor

• Repair or replace damaged wiring

• Replace the control module if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Electric Vehicle Model A

• Hybrid Vehicle Model B

• Plug-in Hybrid Model C

Preventive measures

• Regular maintenance checks

• Ensure proper sensor installation

• Avoid extreme temperature exposure

Error code type

Sensor Issue

User experience recommendations

• Have the vehicle inspected by a professional

• Avoid using the charging system until repaired

Warranty information

Check with the vehicle manufacturer for warranty coverage on sensor-related components.

Historical data

This code is relatively uncommon and typically associated with newer electric and hybrid vehicles.

Urgency level

Moderate – It should be addressed soon to ensure proper charging system function.

Testing conditions

• Vehicle in a safe, stationary position

• Ambient temperature within normal range

Component location

The temperature sensor is usually located near the universal charger extension control module, often in the engine bay or near the battery compartment.

FAQs

Q: Can I drive with the P1C5C code?
A: It's best to avoid driving until the issue is resolved, as it may affect the charging system.

Q: How can I reset the P1C5C code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first.

Optional diagnostic gear

Tools that may help diagnose P1C5C

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.

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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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