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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 06-13-2006, 01:39 PM
rainman rainman is offline
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Location: Columbus, OH
Join Date: Feb 2005
Posts: 12
Mein Auto: '99 328i
Error code P1622

I received the error code P1622 ('99 328i) from the diagnostic tool that Advance Auto Parts let me use. The printout states: Manufacturer Contrl.
Auxiliary Inputs
Auxiliary Outputs

I found a website that defines DTC codes and it states P1622 is MAP Cooling Control Circuit Electrical. Does anyone know what this refers to?

(BTW I did a search for this topic and found that the same question was posed back in Jan. 2005 and there were no responses. I am hoping someone might have encountered the same problem since then and knows what it is)
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Old 06-13-2006, 03:10 PM
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hockeynut hockeynut is offline
Location: Austin, TX
Join Date: Apr 2002
Posts: 17,647
Mein Auto: '04 330cic
I normally just reboot my car

Might want to check in the DIY area of bimmerfest?

"Now I guess I'll have to tell 'em...That I've got no cerebellum" - The Ramones, "Teenage Lobotomy"
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Old 08-14-2006, 07:39 PM
gregp1962 gregp1962 is offline
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Location: Provo Utah
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Mein Auto: Audi A4
I'm getting that same code along with P1392 and P1529. Did you ever get your problem solved?
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Old 08-14-2006, 07:45 PM
streetk14 streetk14 is offline
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Location: Santa Barbara
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Mein Auto: E90 M3
That MAP cooling fault code would be caused by a faulty thermostat. You will need to replace the thermostat.
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Old 08-17-2015, 10:01 AM
BMWagoner BMWagoner is offline
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Location: Philadelphia
Join Date: Jun 2015
Posts: 12
Mein Auto: E86 Z4 Coupe, E39 Wagon
At 20:08 in this video he says that a faulty MAP can throw up O2 sensor codes too (P1188) sometimes, any experience or truth to that?
My thermostat was replaced only 15K miles ago so i just want to be as sure as possible before i throw money at it for another thermostat.
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DTC P1622 does anyone know? sts E46 (1999 - 2006) 0 01-31-2005 10:25 AM

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