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More resources below (page 1)
Background: Lancia Ypsilon 1.3 JTD (70HP) DFN [2004] km: 153542 Clutch pump not priming when opening driver's door. Road assistance got me going just by slightly tapping with a hammer close to gearbox (under battery). A week later, issue recurred. While running, following error appeared, but I think it's all due to motor brushes being end-of-life. In my (humble) opinion, software is unable to detect true root cause because the motor is just being powered without active monitoring (RPM, ...). So, no way to tell if the motor is pumping or not... Note that the motor is being powered by the 50A relay close to the battery (Image1864). Errors found: P1744 - Hydraulic circuit pressure sensor ERROR DETAILS: Battery voltage: 13.49 V Vehicle speed: 0.0 km/h Engine speed: 800 rpm Hydraulic circuit pressure: 40 bar Gear engaged: 1 Desired gear: 1 Gearbox oil temperature: 32.0 °C Check the wiring and connectors of the sensor indicated by the code. If necessary replace the sensor. The reason for this fault is that ECU has received invalid signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was activated for this fault. Marelli SELESPEED CFC208F (1) Automatic Gearbox ECU ISO code BC 07 08 83 23 FIAT drawing number 55205427 Hardware number CFC208F.09 Hardware version 00 Software number FDA17ES0 Software version 0000 Homologation number ECU programming date 05/05/2006 Also applies to: dualogic, selespeed, ... So what's next? --> ypsilon23
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