OBD Guide

P24AC

EGR Cooler Coolant Pump Feedback Circuit Low

P24AC is an OBD-II diagnostic trouble code meaning: EGR Cooler Coolant Pump Feedback Circuit Low. Common causes: egr cooling pump malfunction, open or short circuit in feedback circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light on Dashboard
  • Poor engine idling
  • Increased emissions of harmful substances

Causes

  • EGR cooling pump malfunction
  • Open or short circuit in feedback circuit
  • Poor connection in pump connectors
  • Engine control unit (ECU) malfunction
  • Corrosion or oxidation of contacts

How to Fix

  1. Check the continuity of the EGR cooling pump feedback circuit
  2. Inspect the connectors and clean the contacts from corrosion
  3. Check the voltage and resistance of the EGR cooling pump
  4. Replace the EGR cooling pump if a fault is detected
  5. Scan the system for additional error codes

Related codes

Error P24AC by Vehicle Brand

FAQ

What does the P24AC code mean?

P24AC is an OBD-II diagnostic trouble code that indicates: EGR Cooler Coolant Pump Feedback Circuit Low

What causes a P24AC error code?

The most common causes of P24AC include: EGR cooling pump malfunction; Open or short circuit in feedback circuit; Poor connection in pump connectors; Engine control unit (ECU) malfunction.

How do I fix a P24AC diagnostic trouble code?

To fix P24AC: Check the continuity of the EGR cooling pump feedback circuit. Inspect the connectors and clean the contacts from corrosion. Check the voltage and resistance of the EGR cooling pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24AC?

Yes, but get it checked soon

How much does it cost to fix P24AC?

The estimated repair cost for P24AC is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat