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Discussion Starter #1
Hello to all

I have a couple of errors that I'm having trouble with. P2111 motorised throttle and P2455 differential pressure sensor signal error. The car runs perfect. I have tried to reset using Fiatecucsan. P2111 will not reset but P2455 will reset but after i have driven the car and turned it off and restart again the P2455 will re appear. I have checked signals using the software for throttle and differential sensor. They both seem to be working. Hoping someone out there can steer me in the right direction to fix this.

Thanks in Advance.
 

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Discussion Starter #3
Thanks for your reply. I cant find anything on this. Hope you can point me in the right direction.
 

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The Differential pressure sensor is on the DPF. It senses if there's too much backpressure in the exhaust system in order to request a regen from the ECU.
The sensor itself sits between the glowplug ECU and the coolant tank. Try exchanging it with another one to see if it solves your issues.
 
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