P2084: Exhaust Gas Temperature Sensor Range/Performance (Bank 1 Sensor 2)
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2084 mean?
The bank 1 sensor 2 EGT reading deviates from the expected ratio against the upstream EGT sensor or modeled exhaust temperature. Confuses DPF regeneration control and may force a forced regen.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Sensor aged or drifting
- Medium DPF heavily loaded — non-physical temperature gradient
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
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P2084 in the community
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