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Old 10-16-2015, 02:57 AM   #1
Jesters M3
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P1112 e46 330i

Ok, so I just finished replacing the ccv in this car. Put everything back erased the old codes started it up runs good sounds great and no codes.
I let it warm up awhile shut it off and I hear a weird whoosh sound shortly after the engine stops running 2 seconds after maybe.
I start it back up and BAM cel comes on.
I check the code and p1112 and no it's not the lower radiator hose sensor.
Anybody know what the heck this is?
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Old 10-16-2015, 06:00 AM   #2
jfoj
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First why do you "think" it is not the lower radiator outlet temperature sensor?

Funny how you seem to think you may be wiser than the OBDII system in the vehicle. I would gather there is a reason for the specific code and it is likely correct.

What year and model vehicle are you working on?

How about posting Freeze Frame data.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 10-16-2015, 06:01 AM   #3
NumbaOneNewb
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That whoosh sound should be normal. At least my car does it. Something about the car turning an odd amount of revolution and burning off leftover fuel in the cylinders.

Anyways, try erasing it and starting it up again
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Old 10-16-2015, 05:44 PM   #4
Jesters M3
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Quote:
Originally Posted by jfoj View Post
First why do you "think" it is not the lower radiator outlet temperature sensor?

Funny how you seem to think you may be wiser than the OBDII system in the vehicle. I would gather there is a reason for the specific code and it is likely correct.

What year and model vehicle are you working on?

How about posting Freeze Frame data.

The obdII doesn't tell me it's the lower radiator outlet sensor, the code reader doesn't specify what it is.
I looked it up on the Internet and there's conflicting answers.
I just replaced that sensor ohms tested it and checked voltage to the sensor its reading 5 volts which from what I've read is proper.
So all I'm asking for is has anyone else ran into this problem and is there other sensors related to this p1112 code.
The car is 2001 330i sedan
As for live data I have the program in my laptop BMCables but I'm not to familiar with it yet.
It's different then my Ross tech for my Audi.
But Ive been using a decent code reader that does live data for emissions and such.
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Old 10-16-2015, 05:50 PM   #5
Jesters M3
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Quote:
Originally Posted by NumbaOneNewb View Post
That whoosh sound should be normal. At least my car does it. Something about the car turning an odd amount of revolution and burning off leftover fuel in the cylinders.

Anyways, try erasing it and starting it up again

Thanks, after doing more research on the subject last night I did find out it was normal.
I was just worried at first, because I never heard it before replacing the ccv system then this p1112 code followed.

My ccv was horribly bad and I'm assuming I wasn't hear the whoosh sound before due to the ccv system being shot. By the way what a goofy design this is, does anyone know a way around this?
Like maybe a remote catch can with a similar valve design?

Now for this darn p1112 it's like every time I fix or replace one problem another pops up.
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Old 10-16-2015, 06:36 PM   #6
jfoj
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Quote:
Originally Posted by Jesters M3 View Post
The obdII doesn't tell me it's the lower radiator outlet sensor, the code reader doesn't specify what it is.
I looked it up on the Internet and there's conflicting answers.
I just replaced that sensor ohms tested it and checked voltage to the sensor its reading 5 volts which from what I've read is proper.
So all I'm asking for is has anyone else ran into this problem and is there other sensors related to this p1112 code.
The car is 2001 330i sedan
As for live data I have the program in my laptop BMCables but I'm not to familiar with it yet.
It's different then my Ross tech for my Audi.
But Ive been using a decent code reader that does live data for emissions and such.
Most code readers do not specify what Manufacturer Specific codes refer to and even if they do, it can often be wrong.

P1112 per the Bentley manual that I have indicates - Engine Coolant Temperature Sensor Radiator Outlet High Input

This would most likely mean there is a bad connection/loose female terminals in the connector that mates with the sensor assuming the sensor is not open.

So not sure where the conflicting info is coming from other than the Internet which last I was aware needs to be taken with a grain of salt at times.

The other problem with OBDII codes is when you have dyslexic people posting things online.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 10-16-2015, 09:29 PM   #7
Jesters M3
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Quote:
Originally Posted by jfoj View Post
Most code readers do not specify what Manufacturer Specific codes refer to and even if they do, it can often be wrong.

P1112 per the Bentley manual that I have indicates - Engine Coolant Temperature Sensor Radiator Outlet High Input

This would most likely mean there is a bad connection/loose female terminals in the connector that mates with the sensor assuming the sensor is not open.

So not sure where the conflicting info is coming from other than the Internet which last I was aware needs to be taken with a grain of salt at times.

The other problem with OBDII codes is when you have dyslexic people posting things online.

This is the auxiliary fan temperature switch right?

Some people say it's air temp sensor, vacuumed leak, ccv etc etc I just hate throwing parts at it that are not really needed yet.

But if you're determined that it's that sensor or something to do with this circuit I'll keep at it.
Thank you...
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Old 10-16-2015, 11:37 PM   #8
jfoj
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Quote:
Originally Posted by Jesters M3 View Post
This is the auxiliary fan temperature switch right?

Some people say it's air temp sensor, vacuumed leak, ccv etc etc I just hate throwing parts at it that are not really needed yet.

But if you're determined that it's that sensor or something to do with this circuit I'll keep at it.
Thank you...
I'm telling you what the Bentley Manual states, is it wrong??? It is the "bible" but it could be wrong.

But also realize that Manufacturer Specific codes differ between Manufacturers.

So P1112 is not the same for BMW and say maybe Ford.

I do not know the sensor is bad, there may be a wiring or connection problem. I think a simple Ohmmeter test of the sensor can tell you if it is good.

The correction may not cost money, but as I recall the sensor is around $25 or so.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 10-17-2015, 01:43 AM   #9
Jesters M3
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I'm picking up a new sensor tomorrow. I need to find me a Bentley these things get spendy but worth their weight in gold especially now that I have two E46 a 330i and a M3.
I bought one for my Audi and its been extremely helpful, just to bad my Audi is wrecked at the moment.

Again, thank you I appreciate you confirming this for me.
Once I replace the sensor I'll let you know.
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