P2086 code meaning
Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
Powertrain system Generic code P20xx codes Check engine light
What P2086 means
P2086 would report an implausible reading from the second exhaust temperature sensor on bank 2. Snap-on's code list confirms the wording. No manufacturer document available to us uses the code: GM, Ford and VW keep all diesel sensors on bank 1, Nissan's per-bank gasoline layouts stop at sensor 1, and Ford's 2014 gasoline list jumps from P2085 to P2088. Do not confuse it with the third sensor on bank 1: Ford's 6.7 L diesel checks sensors 1 to 4 against each other under P2080, P2084, P242B and P246F, with P24C2 for a multi-sensor mismatch. Bank 2 sensor 2 only makes sense with two separate exhaust trains that each carry a catalyst. CARB still requires a rationality check for every emission-relevant temperature input. The nearest documented analogue is P2084 on bank 1.
P2086 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2086
- Engine warning lamp on
- Catalyst or filter protection functions limited
Common causes of P2086
- Most likelyBank 2 downstream sensor aged or sooted, reading off
- PossibleSensor loose or not reaching into the gas stream
- Less likelyLeak in the bank 2 exhaust ahead of the sensor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Exhaust gas temperature sensor
What each part of P2086 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 0 | Area: fuel and air metering and auxiliary emission controls. |
| 86 | The exact fault in that area. |
What to do next
- Note P2086 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2086
What does P2086 mean?
P2086 means "Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)". P2086 would report an implausible reading from the second exhaust temperature sensor on bank 2. It is a generic code, so it means the same on every make.
Is it safe to drive with P2086?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2086 fail an emissions test?
Yes, it can. P2086 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2086 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2086 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.