P24E8
NH3 Sensor Heater Circuit High
P24E8 is an OBD-II diagnostic trouble code meaning: NH3 Sensor Heater Circuit High. Common causes: short circuit in the heater circuit, heater relay malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced efficiency of the exhaust gas cleaning system
- Possible errors in the operation of the SCR system
- Increased NOx emissions
Causes
- Short circuit in the heater circuit
- Heater relay malfunction
- NH3 sensor damage
- Problems with wiring or connections
- Engine ECU malfunction
How to Fix
- Check the continuity of the NH3 sensor heater circuit
- Check heater power relay
- Test the resistance of the sensor heating element
- Check connections and condition of wiring harness
- If necessary, replace the NH3 sensor
Related codes
Error P24E8 by Vehicle Brand
FAQ
What does the P24E8 code mean?
P24E8 is an OBD-II diagnostic trouble code that indicates: NH3 Sensor Heater Circuit High
What causes a P24E8 error code?
The most common causes of P24E8 include: Short circuit in the heater circuit; Heater relay malfunction; NH3 sensor damage; Problems with wiring or connections.
How do I fix a P24E8 diagnostic trouble code?
To fix P24E8: Check the continuity of the NH3 sensor heater circuit. Check heater power relay. Test the resistance of the sensor heating element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P24E8?
Yes, but get it checked soon
How much does it cost to fix P24E8?
The estimated repair cost for P24E8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat