P24E4
NH3 Sensor Circuit High
P24E4 is an OBD-II diagnostic trouble code meaning: NH3 Sensor Circuit High. Common causes: nh3 sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced efficiency of the SCR system
- Possible increase in NOx emissions
- Reduced engine power in some cases
- Errors in the emission control system
Causes
- NH3 sensor malfunction
- Open or short circuit in the sensor circuit
- Problems with connectors or wiring harness
- SCR control unit malfunction
- Sensor is dirty or damaged
How to Fix
- Check the continuity of the electrical circuit of the NH3 sensor
- Inspect connectors and wiring harness for damage
- Check the functionality of the NH3 sensor
- If necessary, replace the NH3 sensor
- Check and update the SCR control unit software
Related codes
Error P24E4 by Vehicle Brand
FAQ
What does the P24E4 code mean?
P24E4 is an OBD-II diagnostic trouble code that indicates: NH3 Sensor Circuit High
What causes a P24E4 error code?
The most common causes of P24E4 include: NH3 sensor malfunction; Open or short circuit in the sensor circuit; Problems with connectors or wiring harness; SCR control unit malfunction.
How do I fix a P24E4 diagnostic trouble code?
To fix P24E4: Check the continuity of the electrical circuit of the NH3 sensor. Inspect connectors and wiring harness for damage. Check the functionality of the NH3 sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P24E4?
Yes, but get it checked soon
How much does it cost to fix P24E4?
The estimated repair cost for P24E4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat