OBD Guide

P24E1

NH3 Sensor Circuit

P24E1 is an OBD-II diagnostic trouble code meaning: NH3 Sensor Circuit. Common causes: nh3 sensor malfunction, open or short circuit in sensor wiring. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation
  • Possible ammonia odor

Causes

  • NH3 sensor malfunction
  • Open or short circuit in sensor wiring
  • Poor contact in sensor connectors
  • Engine control unit (ECU) malfunction
  • Problems with the SCR (Selective Catalytic Reduction) system

How to Fix

  1. Check the wiring and connectors of the NH3 sensor for damage
  2. Check NH3 sensor resistance
  3. Check the supply voltage of the NH3 sensor
  4. Replace NH3 sensor if necessary
  5. Check and, if necessary, update ECU software

Related codes

Error P24E1 by Vehicle Brand

FAQ

What does the P24E1 code mean?

P24E1 is an OBD-II diagnostic trouble code that indicates: NH3 Sensor Circuit

What causes a P24E1 error code?

The most common causes of P24E1 include: NH3 sensor malfunction; Open or short circuit in sensor wiring; Poor contact in sensor connectors; Engine control unit (ECU) malfunction.

How do I fix a P24E1 diagnostic trouble code?

To fix P24E1: Check the wiring and connectors of the NH3 sensor for damage. Check NH3 sensor resistance. Check the supply voltage of the NH3 sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P24E1?

Yes, but get it checked soon

How much does it cost to fix P24E1?

The estimated repair cost for P24E1 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat