OBD Guide

P24C4

EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1

P24C4 is an OBD-II diagnostic trouble code meaning: EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1. Common causes: egr bypass valve position sensor malfunction, mechanical failure of the egr valve. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • The Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Dips during acceleration

Causes

  • EGR bypass valve position sensor malfunction
  • Mechanical failure of the EGR valve
  • Dirty or clogged EGR system
  • Problems with the sensor electrical circuit
  • Engine control unit malfunction

How to Fix

  1. EGR Bypass Valve Position Sensor Diagnosis
  2. Cleaning or replacing the EGR valve
  3. Checking the sensor electrical circuit
  4. Resetting error codes and retraining the system
  5. Engine control unit software update (if necessary)

Related codes

Error P24C4 by Vehicle Brand

FAQ

What does the P24C4 code mean?

P24C4 is an OBD-II diagnostic trouble code that indicates: EGR Cooler Bypass Position Sensor Exceeded Learning Limit Bank 1

What causes a P24C4 error code?

The most common causes of P24C4 include: EGR bypass valve position sensor malfunction; Mechanical failure of the EGR valve; Dirty or clogged EGR system; Problems with the sensor electrical circuit.

How do I fix a P24C4 diagnostic trouble code?

To fix P24C4: EGR Bypass Valve Position Sensor Diagnosis. Cleaning or replacing the EGR valve. Checking the sensor electrical circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24C4?

Yes, but get it checked soon

How much does it cost to fix P24C4?

The estimated repair cost for P24C4 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat