Citroen c4 grand picasso - Abs/esp faulty gearbox light's on - Omerhsn

Hello some one can you help me please, sorry for my English. So i got C4 grand picasso 2008 semi automatic gearbox with broken gearbox. Chaged with second hand gearbox (put same actuator on) and got many troubles codes. After then check cables, cleaned wheel sensors front, replaced second hand abs pump (same part number) did abs bleeding all wheels, new battery, electronic parking brake cannot release i did with scanner. still problems. Want to drive and njoy with Citroen but can't. got scanner and my fault codes is:

Automatic or piloted gearbox:

U1213

U0415

P0949

P1800

Engine management ECU:

P1350

P1394

P1351

ABS/ESP:

C1398

C1320

C1330

C139D

U1219

Electronic parking brake:

U1213

Any advice please. Thank you

Citroen c4 grand picasso - Abs/esp faulty gearbox light's on - alexander John

The best approach for addressing the multiple error codes on your Citroen C4 Grand Picasso after a gearbox replacement involves a systematic check of the entire system. First, ensure that all installed components, especially the gearbox and ABS pump, are properly coded to the vehicle's ECU.

It is critical to use a diagnostic tool to verify that there are no faults in the system communication and that each component is recognized and functioning within specifications.