tildaschwarz1
Thalia Transmission Oil Pressure Sensor Issue
Summary of the thread
A 2021 Renault Thalia/Symbol experienced an engine warning light and transmission issues, including slippage, unclean shifts, and grinding noises. The problem was identified as a faulty transmission oil pressure sensor, likely caused by low gearbox oil. The solution involved replacing the sensor and correcting the oil level, resolving the issues and restoring normal function.
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4 comment(s)
tildaschwarz1 (community.author)
This model doesn't have a transmission dipstick. I'll get the error codes ASAP. If the oil level is low, could a faulty pressure gauge or switch also cause these symptoms, or is low oil the only possible cause?
norbert_berger91
Okay, no dipstick is annoying. Yeah, a dodgy pressure sensor could cause some mayhem even if the oil level is fine. But with those grinding noises and the slipping, plus limp mode... it really does point to something serious going on inside the gearbox. Honestly, I'd get it to a workshop ASAP before it gets worse and costs you even more!
tildaschwarz1 (community.author)
I took it to a workshop. They confirmed a faulty transmission oil pressure sensor, likely triggered by the low oil level. The sensor was replaced, and the oil level was corrected. The total cost was 365€. It's now working as expected. Thanks for the insights.
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RENAULT
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THALIASYMBOL
norbert_berger91
Whoa, sounds rough! Grinding noises are never good. Low oil's a decent guess. Did you check the dipstick, if it has one? If not, maybe it's the sensor itself going bad. Got any codes you can share? That might help narrow it down.