andreasdavis1
Peugeot 308 Oxygen Sensor Error
Summary of the thread
A 2023 Peugeot 308 diesel exhibited a check engine light and increased fuel consumption, with diagnostics indicating an oxygen sensor error. Possible causes included defective cables, plugs, or issues with the catalytic converter or exhaust system. After visually inspecting the wiring and connectors, it was suggested to use a multimeter for further testing. Ultimately, a workshop diagnosis confirmed the oxygen sensor was failing, and replacing it resolved the issue.
Did this summary help you solve your problem?
4 comment(s)
andreasdavis1 (community.author)
I've visually inspected the wiring and connectors, but I didn't see any obvious damage. Is there a more rigorous way to test the connection before I take it to a mechanic?
hans_eule1
A multimeter could help you check the continuity of the wiring. However, given the symptoms and mileage, and considering you've visually inspected the connections, it's likely the O2 sensor itself is starting to fail. A workshop diagnosis is probably the next step.
andreasdavis1 (community.author)
I took your advice and brought it to the workshop. It turned out to be the aged oxygen sensor. The garage confirmed it with their diagnostic tools and replaced it for 95€. Everything seems to be back to normal.
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
308
hans_eule1
Could be. O2 sensor issues are common. Have you checked the sensor's wiring and connectors for any damage or corrosion? It's worth a look before assuming the sensor itself is faulty. A failing O2 sensor can impact fuel trim and lead to increased consumption.