AutoCodes – Chevrolet – P24C4 Chevrolet

P24C4 Chevrolet Code - Exhaust Gas Recirculation Cooler Bypass Position Sensor Exceeded Learning Limit

Quick Answer

The offset of the Exhaust Gas Recirculation (EGR) cooler bypass valve is checked after the offset learning has been completed in the after-run/post drive. Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P24C4 Chevrolet indicates Exhaust Gas Recirculation Cooler Bypass Position Sensor Exceeded Learning Limit.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve, Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted, Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,572

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 31, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P24C4 Chevrolet Description

The offset of the Exhaust Gas Recirculation (EGR) cooler bypass valve is checked after the offset learning has been completed in the after-run/post drive. The difference between the maximum and minimum EGR cooler bypass valve offset values is calculated by the Engine Control Module (ECM). If the difference is above a calibrated threshold or the offset learned value is not within a calibrated range, a fault is recognized. While the offset learning is active, the EGR cooler bypass valve is checked for a jammed valve. If the valve is stuck during opening or closing for a calibrated time, a fault is reported. If either of these conditions occurs, the Diagnostic Trouble Code (DTC) will be set.

OBDII Code P24C4 Chevrolet - Exhaust Gas Recirculation Cooler Bypass Position Sensor Exceeded Learning Limit - AutoCodes.com — P24C4 Chevrolet Code - Exhaust Gas Recirculation Cooler Bypass Position Sensor Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P24C4 Chevrolet?

Faulty Exhaust Gas Recirculation (EGR) Cooler Bypass Valve
Exhaust Gas Recirculation Cooler Bypass Valve harness is open or shorted
Exhaust Gas Recirculation Cooler Bypass Valve circuit poor electrical connection

How to Fix the DTC P24C4 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P24C4 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.