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P24AB: EGR Cooler Coolant Pump Stuck On

Severity
High
System
Powertrain
Last reviewed: Last updated:

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

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

Common Causes

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. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P2400 EVAP System Leak Detection Pump Control Circuit/Open P2403 EVAP System Leak Detection Pump Sense Circuit/Open P2404 EVAP System Leak Detection Pump Sense Circuit Range/Performance P2405 EVAP System Leak Detection Pump Sense Circuit Low P2406 EVAP System Leak Detection Pump Sense Circuit High P2407 EVAP System Leak Detection Pump Sense Circuit Intermittent/Erratic P2408 Fuel Cap Sensor/Switch Circuit P2409 Fuel Cap Sensor/Switch Circuit Range/Performance P240A EVAP System Leak Detection Pump Heater Control Circuit/Open P240B EVAP System Leak Detection Pump Heater Control Circuit Low