Powertrain
Definition only
Lights the check engine lamp
P24E2: NH3 Sensor Circuit Range or Performance
Standardized SAE J2012 code · P24xx — Auxiliary emission controls
What does P24E2 mean?
Same as P24E1 with the signal in plausible range yet not matching the engine model.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Sensor element drifted
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P24E2 on the same make and model first.
P24E2 in the community
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