Question about 2003 BMW 525i

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Code p1112 is up on a bmw 525i what do i look for

Check engine light is on code comes up p1112 engine coolant temp. radiator sensor hi input how do I fix it

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  • BMW Master
  • 1,249 Answers

First, find the sensor. Bottom passenger side of radiator I believe. If you're lazy, just change the sensor and make sure the connector is good and tight. If not, do resistance checks on the disconnected sensor and voltage on the connected sensor, both cold and hot. The results will tell you the problem.

If the connector is loose or broken, you can get one with pigtails at your local auto parts store. Chop the old one off, splice the new one in, close up surgery, and connect.

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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SOURCE: 93 bmw 525i, knocking sound by radiator hose/engine

sounds like the vanos does the sound go under load.

Posted on Jul 11, 2009

  • 239 Answers

SOURCE: i have had issue with vehicle temp.runs at idle

Top up the coolant and verify the sensor is working correctly.

Posted on Aug 15, 2009

  • 181 Answers

SOURCE: I have a 02 BMW 525i with check engine light on..Code

Lots of specific BMW forums on the net and am sure if you Google the eror codes you will get an explanation.

Posted on Mar 10, 2010

  • 1 Answer

SOURCE: hi i have BMW 525i 2004 from time to time when

hello there no meter in this car right i have the same car , plz reply

Posted on Mar 22, 2010

  • 593 Answers

SOURCE: our bmw 525i has the light on due to low temp of

When they start the inspection, the states computer
will read that codes have been recently deleted. This
will get you an automatic rejection. I know it will in mass. I would stop by an inspection station and ask
if your engine temp. can keep you from passing.
But if you wan't to clear the codes. Go by an autozone/napa or advance auto parts. They will clear
the code for free. Hope this helps. Good luck.

Posted on Mar 26, 2010

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1 Answer

My BMW 525i 2002 is not running properly you can hear the fan heaps and loud but on cold start it runs mad what could be the problem


You need to check the fault codes.
I feel that you have a sensor gone on the heat system.
probably the temp sensor for the radiator fan.
This i located on the inlet manafold.
If you disconnect it and see if the fan comes on when it is cold.
If it still comes on when you have disconnected the sensor then there is a wiring problem.
You can but a bmw diag for very cheap from ebay but makesure that you buy one that is for bmw and only bmw. many on the cheap ones out there are useless on bmw.

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Trouble codes p0118 temperature po118


code p0118 refers to engine coolant temperature (ETC) sensor ---circuit malfunction===causes---coolant thermostat---wiring open circuit/short to positive---wiring short to ground---ground wire defective---ECT sensor.. The temp gauge works off a temperature sender unit separate to the coolant sensor and if it is reading 100 then it indicates an overheat situation in the engine . Probably why the engine light is coming on. As the thermostat is in the list of causes I would replace it as a precaution. The coolant sensor is what tells the CPU to turn on the electric fans to cool the radiator

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I have a Bmw C318 and when I am stuck in traffic jam my radiator fan is not running enough to cool the engine and i changed the thermostat and the radiator fan new but remained the same.And when i start...


Check the temp. sensor with a digital voltmeter.never use a test light on a comuterized car.should read same voltage on both terminals when fan energized. Highly suspect coolant temp. sensor @ radiator.

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High coolant temp


It is possible, how ever, I would check for inop coolant fan, or restricted radiator. If parts of the radiator are cool to the touch when the coolant fan has kicked in, very possibly resricted flow of coolant through the radiator.

Nov 09, 2011 | 2005 Scion xA

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1995 BMW 525I over heating issue. I repaired head


Hi, Sounds like you have tried about everything. Ok the aux. coolant switch is for the electric pump for the heater core will not cause an over heating condition just a longer warm up of the heater core. Has the cooling system been bleed properly if there is a trapped air pocket it will not let coolant circulate. Was the new thermostat installed correctly? They have a vent that needs to be towards the top or they trap air on the back side and cant take an accurate reading to open and close. Other areas to look at would be proper operation of the fan clutch, if they fail they can cause the fan to not lock up properly and supply enough air movement through the radiator. The aux. electric fans and their temp switches do you hear them coming on are they coming on at the right temp.

Aug 26, 2010 | 1995 BMW 5 Series

1 Answer

Our bmw 525i has the light on due to low temp of coolant. We need to get the car checked by the state emissions testor. I would like to reset the light and deal with the minor problem later Thanks


When they start the inspection, the states computer
will read that codes have been recently deleted. This
will get you an automatic rejection. I know it will in mass. I would stop by an inspection station and ask
if your engine temp. can keep you from passing.
But if you wan't to clear the codes. Go by an autozone/napa or advance auto parts. They will clear
the code for free. Hope this helps. Good luck.

Mar 26, 2010 | 2007 BMW 525xi Sedan

2 Answers

Engine coolent temp circuit high input. what is


More than likely the fan switch in the radiator has failed or the fan itself has failed / is not running, so the water returning from the radiator to the engine is HOT therefore you are seeing the high coolant temp input indication. Check out the operation of your radiator fan.

If the fan circuit is OK then the water temp thermostat may very well be be stuck closed.

Thanks for using FixYa.

Kelly

Mar 20, 2010 | 2002 Kia Sedona

2 Answers

Hi i have BMW 525i 2004 from time to time when


It is very important that the engine not overheat! The head can crack and this would be very bad.
I think your car is too new to need a new radiator.
Make sure the coolant level is correct.
Check the thermostat housing for leaks.
When the engine is hot, check if the fan clutch is locked up and actually driving the fan. Turn the engine off and grab the fan and try to turn it. It should turn stiffly. If it spins freely the fan clutch is dead.
It is possible that the water pump impeller has failed, especially if it is a plastic one.

Jan 21, 2010 | 2004 BMW 5 Series

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