Questions & Answers for: bmw code p1423 p1421

...code. I researched the web and found that on the BMW, this is the secondary air pump for cylinders 1-3 that provides air to the exhaust during warm up. According to others, this may be due to a check ...

...code...not sure where to start... Got check engine light.. I ran diagnostics and read 1421 and 1423 codes.. I know its the secondary air bank.. Any troubleshooting or fix it ideas 1997 BMW 328I 2.8L ...

...BMW, scanner codes P1421 & P1423 Des anyone know what these scanner codes mean? go to the link below, type in the code and the difinition of that code comes up in a list as defined by each car ...

hi my name is george, i have a 97 328i in-line 6 got codes p1421 and p1423 i know what p1421 is but not p1423 its an air flow related code. possibly a cracked hose.

p1423,p0141 code P0455......... Evaporative emission system leak detected ( large leak ) check gas cap code 1451...........secondary air system leak ( bank 2 ) check for vacuum leak code 1423.........

I have code P1421 and p1423 i think is related to the secondary air pump, please let me know code p1423 secondary air injection air system bank 1 insuffient flow detected.

...p1423 refers to secondary air injection system --insufficient flow detected causes hose connections---air valve--air pump p1421 refers to secondary air injection system bank 2 insufficient flow ...

...BMW 323ci with P1421 and P1423 codes what are they and how do i fix them? Thanx Here you go: P1421 - Secondary Air System malfunction P1423 - Low flow limit check This indicates a problem with your ...

code p1421 0n 2000 bmw 328i https://blog.bavauto.com/5929/bmw-fault-codes-p1421-p1423-secondary-air/