Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2
What it means
P2084 means the exhaust gas temperature (EGT) sensor 2 on bank 1 is reading outside its expected range or not tracking exhaust temperature plausibly. The engine still starts and runs, but on diesels this sensor helps manage and protect DPF regeneration, so a skewed reading can interfere with soot burn-off. It usually points to a drifting sensor or a wiring/connector problem.
Can I keep driving? The engine runs and starts normally; on diesels it can disrupt DPF regeneration, so fix it before soot accumulates.
Real-world scan data
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Diesel: incomplete or missed diesel particulate filter (DPF) regeneration
- Possible reduced power if the vehicle enters a protective mode
- Often no change in how the engine drives
Common causes
Most likely first
- Faulty or out-of-range exhaust gas temperature (EGT) sensor 2 on bank 1Likely
- EGT sensor reading implausibly for the operating condition (drift/skew)Common
- Wiring or connector fault adding resistance to the sensor circuitCommon
- Heat or physical damage to the sensor or its harnessLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare this EGT sensor's temperature to the other exhaust sensors.
- Inspect the sensor connector and harness for corrosion, high resistance, or heat damage.
- Check the sensor's response against spec; a reading that doesn't track exhaust temperature indicates a failed sensor.
- Replace the EGT sensor if out of range, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2084?+
Can I just clear P2084?+
Related codes
Read & clear P2084 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.