P2086
Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2
Exhaust gas temperature (emissions)
Generic OBD-II
Low
What it means
P2086 means the exhaust gas temperature sensor at bank 2, position 2, is reading implausibly — its value drifts or does not match the other temperature sensors. This sensor protects the turbo and particulate filter, so the engine still runs normally, but some vehicles limit DPF regeneration while it is faulted. Compare its reading to the other EGT sensors and check the wiring before replacing it.
Low
Can I keep driving? Safe to drive — the engine runs normally, though some vehicles limit diesel filter regeneration or turbo-protection while this sensor reads incorrectly.
Common symptoms
What you'll notice
- Check-engine light on
- No noticeable change in how the engine runs
- On diesels, DPF regeneration may be limited while the fault is present
Common causes
Most likely first
- Exhaust gas temperature (EGT) sensor at bank 2 sensor 2 reading out of range or driftingLikely
- Harness open, shorted, or chafed in the sensor circuitCommon
- Poor or corroded electrical connection at the sensorCommon
How to diagnose & fix
Work through it in order
- Read freeze-frame data and view the EGT sensor 2 reading with a scan tool.
- Compare it to the other exhaust temperature sensors when the engine is at the same temperature — a large mismatch points to a bad sensor.
- Inspect the connector and wiring for damage or corrosion; repair as needed.
- Replace the exhaust gas temperature sensor if it reads implausibly with good wiring.
FAQ
Quick answers
Is it safe to drive with P2086?+
Yes. It is a monitoring-sensor fault, not a mechanical one. On diesels, fix it promptly so the particulate filter can still regenerate.
Can I just clear P2086?+
It will return unless the sensor or wiring is repaired, because the out-of-range reading persists.
Related codes
Often seen with P2086
Read & clear P2086 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX