P24AB — EGR Cooler Coolant Pump Stuck On

What Does P24AB Mean?

P24AB is a diagnostic trouble code indicating: EGR Cooler Coolant Pump Stuck On. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P24AB

⚠️ Check Engine Light (MIL) illuminated
⚠️ EGR Cooler Coolant Pump remains active when it should be off
⚠️ Related system running continuously
⚠️ Reduced engine performance

Common Causes

🔍 EGR Cooler Coolant Pump mechanically stuck in active position
🔍 Short circuit holding EGR Cooler Coolant Pump control on
🔍 Faulty EGR Cooler Coolant Pump driver circuit in ECM/PCM

Frequently Asked Questions

What does P24AB mean?

P24AB indicates: EGR Cooler Coolant Pump Stuck On. The vehicle's computer has detected that the EGR Cooler Coolant Pump is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P24AB?

Only short distances if absolutely necessary. P24AB affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P24AB?

Repair costs for P24AB typically range from $50 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect EGR Cooler Coolant Pump for mechanical binding or debris
🔧 Replace stuck EGR Cooler Coolant Pump
🔧 Check EGR Cooler Coolant Pump control circuit for short

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P24AB: EGR Cooler Coolant Pump Stuck On