P2485 code meaning
Exhaust Gas Temperature Sensor Circuit/Open (Bank 2 Sensor 5)
Powertrain system Generic code P24xx codes Check engine light
What P2485 means
P2485 reports a circuit or open-circuit fault at a fifth exhaust temperature probe on bank 2. That requires a V engine with two separate aftertreatment lines carrying five probes each, a layout no public maker document shows. No manufacturer documents P2485. The closest reference is GM's single-bank diesel, which watches its probe 5 on bank 1 and folds the open circuit into the High code P2482 (above 1400 Ω in 2018, beyond 100 MΩ in 2025). CARB merely requires that every such input be monitored for circuit faults. If the code appears, check that the scan tool's probe numbering matches the vehicle, then the connector and lead. Bank 1 equivalent: P2480; Low/High of the same probe: P2486/P2487.
P2485 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2485
- Warning lamp on
- No valid value for this probe
Common causes of P2485
- Most likelyInterrupted lead between control unit and probe
- PossibleConnector left unplugged after exhaust work
- PossibleProbe element open
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Egt sensor b2s5Egt wiring
What each part of P2485 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 85 | The exact fault in that area. |
What to do next
- Note P2485 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 P2485
What does P2485 mean?
P2485 means "Exhaust Gas Temperature Sensor Circuit/Open (Bank 2 Sensor 5)". P2485 reports a circuit or open-circuit fault at a fifth exhaust temperature probe on bank 2. It is a generic code, so it means the same on every make.
Is it safe to drive with P2485?
Drive gently and only to a workshop. With P2485 the car can go into limp mode (reduced power) to protect itself.
Will P2485 fail an emissions test?
Yes, it can. P2485 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 P2485 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2485 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.