OBD Guide

P24A5

EGR Cooler Bypass Control Stuck/Open Bank 1

P24A5 is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Control Stuck/Open Bank 1. Common causes: egr bypass valve stuck open, open or short circuit in valve control circuit. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Unstable idling
  • Increased fuel consumption
  • Deterioration in acceleration dynamics

Causes

  • EGR bypass valve stuck open
  • Open or short circuit in valve control circuit
  • Control solenoid valve malfunction
  • Mechanical damage or contamination of the valve
  • Problems with the vacuum system (if the valve is a vacuum type)

How to Fix

  1. Check the condition of the EGR bypass valve for jamming
  2. Check the integrity of the valve control electrical circuit
  3. Check the operation of the solenoid valve (if equipped)
  4. Clean or replace EGR bypass valve
  5. Check the tightness of the vacuum hoses (for vacuum systems)

Related codes

Error P24A5 by Vehicle Brand

FAQ

What does the P24A5 code mean?

P24A5 is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Control Stuck/Open Bank 1

What causes a P24A5 error code?

The most common causes of P24A5 include: EGR bypass valve stuck open; Open or short circuit in valve control circuit; Control solenoid valve malfunction; Mechanical damage or contamination of the valve.

How do I fix a P24A5 diagnostic trouble code?

To fix P24A5: Check the condition of the EGR bypass valve for jamming. Check the integrity of the valve control electrical circuit. Check the operation of the solenoid valve (if equipped). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24A5?

Yes, but get it checked soon

How much does it cost to fix P24A5?

The estimated repair cost for P24A5 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat