amelieghost1

Peugeot 307 gearbox oil temperature sensor fault

I'm having issues with my 2009 Peugeot 307 diesel. The engine warning light comes on sometimes, and the error memory says there's a fault with the transmission oil temperature sensor. The gearbox occasionally goes into emergency mode, gear shifts aren't smooth, and sometimes there's a slight grinding noise. It's done 65479 km. Has anyone else had this?

4 comment(s)

I had similar symptoms on my old Renault Megane. The gearbox would act up, and the error codes pointed to a temperature sensor issue. Did you check the gearbox oil level? In my case it was simply too low.

Thanks. Is the gearbox oil level easy to check, or is it best left to a professional with special equipment?

On the Megane, the fill plug was tricky to access. Unless you're comfortable working under the car and know the proper procedure, I'd recommend having a workshop check the oil level. It's a quick job for them, and they can advise you on any leaks.

Turns out the issue was low gearbox oil, probably from a broken sensor! After topping up the oil and replacing the temperature sensor, the problem seems to be fixed. Total cost was 365€ Thank you for pointing me in the right direction.

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