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Code P24AD

Quick reference

P24AD at a glance

Plain-language meaning
This code means that the car's computer thinks there's a problem with the pump that cools down part of the engine. It thinks the pump is sending back a signal that's too strong.
Urgency
Moderate – While the vehicle may still be drivable, ignoring the issue can lead to more severe engine problems.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

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

Laymans terms

This code means that the car's computer thinks there's a problem with the pump that cools down part of the engine. It thinks the pump is sending back a signal that's too strong.

Explanation

The EGR cooler coolant pump is responsible for circulating coolant to cool the exhaust gases before they re-enter the engine. A high feedback circuit signal indicates an issue with the electrical circuit or the pump itself.

Technical description

The P24AD code is triggered when the Engine Control Module (ECM) detects a high voltage signal from the EGR cooler coolant pump feedback circuit. This could indicate a short circuit, a faulty pump, or a wiring issue.

Symptoms

• Check Engine Light is on

• Engine overheating

• Reduced engine performance

Common Causes

• Faulty EGR cooler coolant pump

• Wiring issues or short circuits in the feedback circuit

• Faulty ECM

Glossary

EGR: Exhaust Gas Recirculation

ECM: Engine Control Module

Diagnosis steps

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

• Inspect the wiring and connectors for damage or corrosion.

• Test the EGR cooler coolant pump for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the EGR cooler coolant pump if faulty.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-250

• Chevrolet Silverado

• Ram 1500

Preventive measures

• Regularly inspect and maintain the cooling system.

• Ensure proper coolant levels and quality.

• Address any Check Engine Light issues promptly.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Have a professional inspect the vehicle if unsure.

• Regular maintenance can prevent such issues.

Warranty information

Check with your vehicle manufacturer for warranty coverage on emission-related components.

Historical data

This code has been associated with issues in vehicles with advanced emission control systems, particularly in models with EGR systems.

Urgency level

Moderate – While the vehicle may still be drivable, ignoring the issue can lead to more severe engine problems.

Testing conditions

• Engine at operating temperature

• Vehicle in a safe, stationary position

Component location

The EGR cooler coolant pump is typically located near the engine, connected to the EGR cooler and the coolant system.

FAQs

Q: Can I drive with a P24AD code?
A: It's not recommended, as it can lead to engine overheating and further damage.

Q: How can I reset the Check Engine Light?
A: You can use an OBD-II scanner to reset the light, but it's important to fix the underlying issue first.

Optional diagnostic gear

Tools that may help diagnose P24AD

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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