Fault 26: KCM831: Unplug
thermistor input at XT1
on V3F25.
RS20 and KCM831
hydro: Unplug
connector XT on
LCEDRV.
RS100: Unplug
connector LCEMCU
XM28

Fault 21 is safeties

1801 : Front side car interface board
failed
Board broken. Wiring mistake.
Fuse from Power supply burnt.