tim_walter81
Peugeot 207 transmission issue
Summary of the thread
A 2010 Peugeot 207 diesel experienced transmission issues, with the transmission indicator and check engine lights activating, and the vehicle entering emergency mode. The problem was linked to a 'Radiator oil pressure defective' error, causing shifting difficulties and gearbox noises. A faulty cable connection near the radiator was identified as the cause, and repairing this resolved the issue.
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4 comment(s)
tim_walter81 (community.author)
Could you be more specific about which connections I should inspect? I'm not entirely sure where the pressure sensor is located in relation to the cooling fan and coolant reservoir.
erwinfeuer1
I remember the sensor being near the bottom of the radiator, on the driver's side, with a small plug. But honestly, given the gearbox symptoms and the error code, I'd suggest taking it to a workshop. It could be more complex than just a loose connection.
tim_walter81 (community.author)
Turns out you were right. It was a faulty cable connection near the radiator. The workshop identified and repaired it. Total cost: 95€! Thanks again for your help.
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PEUGEOT
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207
erwinfeuer1
That sounds familiar. I had similar symptoms with my old Opel Astra after a coolant leak. Check the pressure sensor connections near the cooling fan and radiator coolant reservoir. It could be a simple fix, but it's hard to be sure without proper diagnostics.