eliasblaze1

Peugeot 407 outside temperature sensor issues

I've got a 2009 Peugeot 407 (gasoline engine) with 297515 km. The outside temperature sensor seems faulty. I'm getting an error code, the AC won't kick on, the windshield washer fluid is freezing even when it's not that cold, and the mirror heating isn't working. From what I've read, it's likely a cable or connector issue. Anyone seen this?

A 2009 Peugeot 407 is experiencing issues with the outside temperature sensor, leading to an error code P0070, malfunctioning AC, freezing windshield washer fluid, and non-working mirror heating. The problem is likely due to a faulty sensor or a cable/connector issue. The solution involved addressing a corroded connector, which resolved the issues after repair.

Did this summary help you solve your problem?

4 comment(s)

Sounds familiar. I have a 407 too. I had similar symptoms – the AC refusing to work was the most annoying thing. When you say 'error code', which one are you getting? An outside vehicle temperature sensor reports the ambient air temperature to the car's computer, which controls the air conditioning, defogging, and other climate-related functions. A faulty sensor tells the computer the incorrect temperature, or no temperature, or an implausible one, causing all sorts of issues.

Thanks! Sorry, forgot the code. It's P0070 - Ambient Air Temperature Sensor Circuit Malfunction. Did yours throw the same code?

Yep, P0070 rings a bell. Honestly, I fiddled with it for a bit, checking the wiring near the sensor (it's usually behind the front bumper), but I eventually gave up and took it to a workshop. It wasn't worth the headache for me.

Thanks for the info! Ended up being exactly what was suspected: corroded connector. 95€ later all the systems are working again.

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

PEUGEOT

community_crosslink_rmh_model

407