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Topic: code 57 (Read 511 times) |
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big_timer
Full Member
2.3 manual ultima saloon
Posts: 183
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hiya lads
just done a self diagnosis on the old scorp.two dials to left and ac and recirculate button for 10 secs and got code 57 coming up in left hand screen.could anyone tell me what it is and is it serious.
car going an absolute dream.even got the rattle at the front sorted(previous post).a worn drop link.
please help.atb
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
Posts: 6278
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Re: code 57
« Reply #1 on: Aug 24th, 2008, 4:31pm » |
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Code 57 is related to hte HBC which is the heater blower control module ..
Try a couple more resets it can clear but if not then a new or a replacement HBC is required .
Really easy DIY job see previous posts HERE formore advice and also the main web site which carries a wealth of info but HERE IS A START
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Scorpio_Mike
Senior Member
Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
Posts: 2354
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Re: code 57
« Reply #2 on: Aug 24th, 2008, 10:34pm » |
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I sometimes a get the 57 code - normally after driving over speed humps so assume it is a bad connection somewhere. I just reset it and it's fine for a few weeks.
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Sierra XR4i's are great...especially when fitted with 4WD 
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big_timer
Full Member
2.3 manual ultima saloon
Posts: 183
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Re: code 57
« Reply #3 on: Aug 25th, 2008, 3:13am » |
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thanks lads ive noticed that the fan is a bit intermittent at low setting,but it still works fine.dont think it is hopefully much to worry about.i have to take switch panel off anyway due to a few bulbs out.
thanks for your quick response 
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: code 57
« Reply #4 on: Aug 25th, 2008, 10:54am » |
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The HBC uses the aircon fan to keep cool so if your fan is intermittent then you are likely to get a code.
A problem with this system is that that the HBC will be at its hottest when it’s keeping the fan at its slowest speed.
If the fan is a bit stiff it may stall at low speed causing the HBC to overheat.
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