Hello , I have changed about 3 batteries in 8 years that I own the GTA . The last has less than a year old and is a Varta AGM also increased from the original. Exclude electrical problems arising from it , I checked the voltages and are in place . I own an official Fiat Examiner Smart for years and I did all the tests and reset possible , but precisely the problem seems to disappear only by disconnecting and reconnecting the connectors of the sensors which , I repeat , appear with their wiring very short . Giving to think that with vibration and engine heat , loosening and do not make good contact , hence the relative error after a certain number of kilometers .
EDIT:
I also add that with Examiner connected I tried to move , either disconnect the connectors of the two sensors in question and I appeared exactly the same error code of me when the problem arises . I am relatively sure that the problem is in the connectors and / or in the relative short / ruined cables. However it is not an easy job for lack of space to replace them , also because it 's not easy to find the connectors that I found with difficulty..