OBD Guide

P24F5

NOx Sensor Delayed Response - High to Low Bank 1 Sensor 2

P24F5 is an OBD-II diagnostic trouble code meaning: NOx Sensor Delayed Response - High to Low Bank 1 Sensor 2. Common causes: nox sensor malfunction, damaged or corroded electrical connections. Estimated repair cost: $167–444.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$167–444 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Noticeable increase in emissions

Causes

  • NOx sensor malfunction
  • Damaged or corroded electrical connections
  • Problems with the sensor wiring harness
  • Poor quality or contamination of AdBlue reagent
  • Engine control unit software errors

How to Fix

  1. Check the condition of the sensor electrical connections
  2. Test the NOx sensor using diagnostic equipment
  3. Check the quality and level of AdBlue reagent
  4. Update engine control unit software
  5. If necessary, replace the NOx sensor

Related codes

Error P24F5 by Vehicle Brand

FAQ

What does the P24F5 code mean?

P24F5 is an OBD-II diagnostic trouble code that indicates: NOx Sensor Delayed Response - High to Low Bank 1 Sensor 2

What causes a P24F5 error code?

The most common causes of P24F5 include: NOx sensor malfunction; Damaged or corroded electrical connections; Problems with the sensor wiring harness; Poor quality or contamination of AdBlue reagent.

How do I fix a P24F5 diagnostic trouble code?

To fix P24F5: Check the condition of the sensor electrical connections. Test the NOx sensor using diagnostic equipment. Check the quality and level of AdBlue reagent. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24F5?

Yes, but get it checked soon

How much does it cost to fix P24F5?

The estimated repair cost for P24F5 is $167–444. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat