Question about 2001 BMW X5 3.0

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PO 125 Insufficient coolant temp. - 2001 BMW X5 3.0

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If it sets this code in the cold and you experiance less heat then most likely its the thermostat

Posted on Dec 29, 2012

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No or faulty thermstat

Posted on Dec 29, 2012

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1 Answer

Blazer is misfiring only in drive while stopped then runs smoothly when accelerated po codes 452 125 are also coming up what is it


Code P 0125 indicates insufficient coolant temp to enter closed loop operation. Most likely cause is either engine is not warming up (stuck thermostat) or more likely bad coolant temp sensor is making computer think engine is not warm and thus sends excess fuel injector pulse making engine run rich. Very common problem which kills gas mileage and may make car run poorly. Easy part to test or just change.

Dec 19, 2014 | Cars & Trucks

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I have the check engine ligth on the dash board


OBD II code P0125 = Closed Loop Fuel Ctrl Insufficient Coolant Temp

Dec 28, 2012 | 2000 Toyota Corolla

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Check engine light on. Code PO 125, insufficient coolant temp. for closed loop control. How urgent is repair needed?


It is not causing any damage and will likely not leave you stranded however it will be hitting you in the pocket book. A cooler running engine will require more fuel to keep running. Also if the engine temp does not get up to full operating temp the PCM may not enter closed loop which mean it will be running on preprogrammed conditions rather than on sensor data which will also use more fuel and may cause some performance issues. A new thermostat is the normal fix for this problem. $10-$20 for a stat and an hour to replace with basic hand tools and you should be good to go. If your not a do it yourselfer you should be able to get this done for under a couple hundred dollars maybe a little more if you need a coolant flush. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Jan 10, 2012 | 2000 Ford Expedition

1 Answer

Ford escort zx2 escort trouble shoot code 125, it says closed loop system temp. sensor throttle control. where is it?


The code is P0125 insufficient coolant temperature for closed loop control excessive simple fix replace the termostat the engine coolant temperature(for ECM) is rarely the problem play it safe a go ahead and replace it but above all else do the thermostat if the ECT is correct it means the thermostat is open

Aug 18, 2011 | Ford Escort Cars & Trucks

1 Answer

AC has freon but it quits and starts blowing hot air then it has a blue thermostat symbol on dash has 2 codes po 128 and po 118


Both codes are for the coolant temp, the blue symbol means the car is cold, check the fans to make sure there operating and check coolant level

Jun 21, 2011 | Volkswagen Beetle Cars & Trucks

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I HAVE CODE; P.125 CHEVROLET 05 IMPLA


Insufficient Coolant Temperature causes could be low on coolant or thermostat stuck open or bad coolant temperature sensor.

Apr 09, 2011 | Chevrolet Chevy Cars & Trucks

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My t-100 just had a clutch replacement. On the way home from the dealer the check engine light came on. the codes come up as po 125 and po 135. Is it likely that wires connecting to either sensor were...


yes the o2 sensor probably was unplugged during repair and coolant temp sensor may have depending on where it located on your truck if you didnt have these codes before the repair the dealer should fix this for no charge cause it obvious it happened under there repairs

Mar 06, 2011 | 1997 Toyota T100

1 Answer

Check engine light is on. error reads PO128 and


hi 128 is coolant temp below regulating temp 405 is










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hi 128 is coolant is below regulating temp 405 is<erg/swsr/ckt low> hope this helps please rate this answer












Nov 20, 2009 | 2002 Saturn L-Series

1 Answer

Error P0125 and 1135 on obd2 reader


125 insufficient coolant temp for closed loop 1135 sensor heater circuit response bank 1 sensor 1--both can be caused by same problem code can go off for insufficient warm up -low coolant level-thermostat leaking/stuck open or faulty sensor reset code and see if problem returns code sometimes known to go off if vehicle didnt warm up before being turned off short distance drive

Oct 21, 2009 | 1999 Toyota Camry

1 Answer

Getting a low coolant temp code.temp is normal. im


Sometimes there are two Temp sensors. Did you see if you had two?

Jul 29, 2009 | 1997 Toyota Tacoma

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