what is this fault code ?

[zs&tas]

trying to get my car up and moving, 2004 c5 facelift comes up with a p1598 fault code, anyclues ?

[oneday]

hi what dyd you use to get this code

[zs&tas]

just some friends code reader

[oneday]

you need to use a lexia i dont think that code is one for a citroen

[citronut]

i to think the code is not correct as gooogling it also suggests, one goooogly result below

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