The outside temperature sensor on most Honda Accords is tucked behind the front bumper in the lower grille area, on the passenger side. It is a small two-wire sensor that feeds the exterior temperature reading you see on the dash and climate controls.
Typical placement you can expect
The exact spot can vary by generation and trim, but the sensor is usually located behind the lower portion of the front bumper, near the passenger-side fog-light housing or close to the condenser. Access typically requires removing part of the bumper or splash shield.
- Behind the front bumper's lower grille on the passenger side, near the fog-light housing or condenser.
- In some older or different trims, mounted to the radiator support behind the bumper, accessible from underneath the car.
- On a few models, integrated into a bumper insert or behind a protective cover that must be removed to see the sensor.
In practice, you’re looking for a small two-pin sensor with a short wiring connector tucked into the bumper area. If you don’t see it from behind the bumper, checking both the splash shield and the bumper cover's backside can help you locate it.
How to access the sensor safely
To inspect, test, or replace the sensor, you’ll often need to remove part of the bumper or splash shield. Follow these steps carefully to avoid damaging components.
- Park on level ground, apply the parking brake, and disconnect the negative battery terminal to prevent shorts and airbag issues.
- Support the vehicle if you need to work from underneath; gather the necessary tools and have a helper if possible.
- Remove the bumper splash shield and any trim pieces to expose the lower front bumper area.
- Locate the OAT sensor behind the bumper, typically near the passenger-side edge; disconnect its two-pin connector.
- Inspect the sensor and wiring for damage, corrosion, or loose connections, and replace or clean as needed before reassembly.
Reassemble in reverse order, ensuring all fasteners are secure and the bumper/splash shield sits flush.
Summary
For most Honda Accords, the outside temperature sensor sits behind the front bumper in the lower grille area on the passenger side. Exact placement can vary by generation, but the bumper area behind the lower grille is the area to inspect. If in doubt, consult the owner's manual or a service manual for your specific year, or have a technician locate and service it.