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Code P0C24

Quick reference

P0C24 at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the electric pump that helps move the transmission fluid. It's like when a toy's battery is running low, and it can't work properly.
Urgency
Moderate – It should be addressed soon to avoid potential transmission damage.
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 has detected a problem with the electric pump that helps move the transmission fluid. It's like when a toy's battery is running low, and it can't work properly.

Explanation

The P0C24 code is triggered when the control module for the electric or auxiliary transmission fluid pump detects a low voltage or signal issue in the circuit.

Technical description

The electric or auxiliary transmission fluid pump is responsible for maintaining the proper flow of transmission fluid, especially in hybrid or electric vehicles. The control module monitors the pump's operation and ensures it receives the correct voltage. If the voltage is lower than expected, the P0C24 code is set.

Symptoms

• Check Engine Light is on

• Transmission may not shift properly

• Reduced fuel efficiency

Common Causes

• Faulty electric/auxiliary transmission fluid pump

• Damaged wiring or connectors in the pump circuit

• Faulty control module

Glossary

OBD-II: On-Board Diagnostics, a system for self-diagnosing and reporting vehicle issues

Transmission Fluid: A liquid that lubricates and cools the components of a vehicle's transmission

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Inspect the wiring and connectors for damage or corrosion

• Test the pump's voltage and resistance

Repair procedures

• Repair or replace damaged wiring or connectors

• Replace the faulty transmission fluid pump

• Replace the control module if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $800

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Prius

• Chevrolet Volt

• Ford Fusion Hybrid

Preventive measures

• Regularly check and maintain transmission fluid levels

• Inspect wiring and connectors for wear and tear

• Ensure the vehicle's electrical system is in good condition

Error code type

Sensor Issue

User experience recommendations

• Avoid driving the vehicle until the issue is resolved to prevent further damage

• Consult a professional mechanic for accurate diagnosis and repair

Warranty information

Check with your vehicle manufacturer for warranty coverage on hybrid or electric vehicle components.

Historical data

This code is more common in hybrid and electric vehicles due to their reliance on electric pumps for transmission fluid circulation.

Urgency level

Moderate – It should be addressed soon to avoid potential transmission damage.

Testing conditions

• Vehicle should be in a safe, stationary position

• Ensure the vehicle's battery is fully charged

Component location

The electric/auxiliary transmission fluid pump is typically located near the transmission assembly.

FAQs

Q: Can I drive with the P0C24 code?
A: It's not recommended to drive with this code as it can lead to transmission damage.

Q: How do I reset the P0C24 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Optional diagnostic gear

Tools that may help diagnose P0C24

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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