Need Help With A/C pressure sensor
03-17-2021, 02:33 AM
#21
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I can't give you any other advice. The remaining codes do not point to an issue with the cooling system. If your fan was running fast before and after the change and you still have a sensor error it only makes since that the new sensor is bad. I can't give you a definitive answer because of the unknown to me: Knowing the actual pressures of the high and low side. I don't doubt your mechanic but I can't say it is indeed a bad sensor unless the know pressure values. The fan runs fast due to too many things and the only error you have that will make it run fast is the sensor error.
I'll post a lot of pictures of diagnostic tool (INPA).
Seanjordan, yesterday I check a/c with INPA and there is something wrong!
In order:
1- I connect pc via INPA, start engine and a/c and check...2 error codes (fogging sensor + 9c5e) not possible delete (fan run max speed), no cold air.
2- I activate a/c via INPA and changed value manually via software and I HAVE COLD AIR (a/c work great) but fan run at max too.
3- I deleted errors and all was clear (done) but fan don't stop run.
4- engine always on, switch off a/c and after few seconds switch on a/c again and NO COLD AIR.
5- Check error codes and again 2errors not possible to delete!
6- repeat steps from 2 to 5 and same story.
I contacted a friend (technician) and he told me that problem is (probably) one of 9 motor (stepper?) who move the flap of a/c insidie the car.
He told me too that ECU that "control and active" the a/c system is the DDE unit.
What do you think about?
03-17-2021, 02:49 AM
#22
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
When I asked if there were any other codes I don't think you understood what I meant. If you open up INPA and go to the functions tab and run a code report for the whole it will lost every module with the errors. Please post screenshot of that. It looks like the pic below
03-17-2021, 04:00 AM
#23
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When I asked if there were any other codes I don't think you understood what I meant. If you open up INPA and go to the functions tab and run a code report for the whole it will lost every module with the errors. Please post screenshot of that. It looks like the pic below
Before fan run I had same errors expect the 9c5e.
In any case, next hours I can take picture of required and I post it.
03-17-2021, 12:05 PM
#25
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
Trying to troubleshoot the fan running high, run the car until operating temperature. Look in INPA to see what temp the engine is at. You may have a bad water pump. You should have a code for it but I don't think it gives an error message I think it's an information message (IM) it gives. That or an open thermostat
03-17-2021, 10:50 PM
#26
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Trying to troubleshoot the fan running high, run the car until operating temperature. Look in INPA to see what temp the engine is at. You may have a bad water pump. You should have a code for it but I don't think it gives an error message I think it's an information message (IM) it gives. That or an open thermostat
I ask you because I notice that when I use INPA I can activate all functions of a/c by PC and if consolle stay off it remain off. Such as consolle and INPA work on "different channels"...what do you think about?
Today I'll check temperature of motor after use and I tell you but if I remember correctly temperature is right.
03-19-2021, 01:09 AM
#27
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Trying to troubleshoot the fan running high, run the car until operating temperature. Look in INPA to see what temp the engine is at. You may have a bad water pump. You should have a code for it but I don't think it gives an error message I think it's an information message (IM) it gives. That or an open thermostat
Compressor of BMW e61 (2005 pre LCI with CCC) has magnetic clutch or work on PWM?
Do you know?
Thanks
03-19-2021, 02:57 AM
#29
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