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Steve, BMW Expert
Category: BMW
Satisfied Customers: 24123
Experience:  BMW Expert
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I'm having code 1622 show up on my 2000 bmws 323i

Customer Question

I'm having code 1622 show up on my 2000 bmws 323i
Submitted: 2 years ago.
Category: BMW
Expert:  Steve replied 2 years ago.
Hello and welcome,
My name is ***** ***** it will be my pleasure to assist you today.
What has been attempted so far?
Customer: replied 2 years ago.
I changed the thermostat the first time the code came up but it's back
Expert:  Steve replied 2 years ago.
how long ago was the thermostat replaced before the code came back?
Customer: replied 2 years ago.
About a year
Expert:  Steve replied 2 years ago.
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.
most likely the fault is the thermostat again. it should be replaced.
if you used a genuine BMW part, it may still be under parts warranty
if the fault returns with a new replacement thermostat, then the wiring/connection is the suspect
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.