Question about 2008 BMW 328xi

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How to reset bmw ecu

I HAD A BAD FUEL CAP WHICH CODE P-0442 APPEARED ON MY OBD SCANNER. I PUT ON A NEW CAP AND TURNED OFF THE LITE. THE INSPECTION STATION SAYS THE COMPUTER HAS TO BE RESET BY DRIVING THE CAR ............ IS THIS CORRECT EVEN THOUGH THERE IS NO ENGINE LITE ON NOW ???

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  • 179 Answers

If you have a scanner you should be able to use it to reset the code. But driving the car is correct. Most codes will reset themselves after 20 or 25 good starts. (Starts without the problem)

Posted on Apr 12, 2014

  • Tomi Vuorinen Apr 18, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

bmw_tech_38
  • 113 Answers

SOURCE: BMW 530, 2004, how to reset the car to recognize the new filter

Hi aajabbar , this can be tricky if you haven't reset the cbs indicator before
first turn the ignition on so that you have all the ignition lights on and the engine not running, once the service indicator has cleared fom the display, press and hold the tripometer in until the display shows a triangle then the microfilter symbol, release the button then press and hold again untill reset shows, then release and press and hold again untill you have a sequence of lines on display, once this has happened release the button and turn off the ignition, once the ignition is switched on again the sevice indicator should have reset. you may wish to print these instructions and familiarise yourself with them before carrying out a reset. regards Mark.

Posted on Jan 25, 2009

emissionwiz
  • 75077 Answers

SOURCE: Check Engine light on 1998 BMW Z3 roadster

yes the light is because of the gas cap being gone (sets code in evaporative emissions system), replace the gas cap, disconnect the battery for five minutes and that will turn of/reset the light, make sure u have the radio code before u do this, if u don't u will have no radio after the battery is disconnected..

Posted on May 08, 2009

  • 220 Answers

SOURCE: Car starts then immediately idles down and shuts off

i have had the same problem at times. my car would start and then shut off. but i found that i needed oil and check my oil and it was a quater low put in some oil and everything went fine i notices that everytime the oil is low the same thing happens also depending on the position of the car being park meaning that if you are in a down hill position or up hill position i will do the same. so you have to accelarate for 1 minute to have the oil go up. i hope this works

Posted on Jun 18, 2009

rteemon
  • 578 Answers

SOURCE: reset warning lights BMW 325

make abs sensor is properly plug in if they are not you will see that light

Posted on Jul 01, 2009

emissionwiz
  • 75077 Answers

SOURCE: Check engine light on 1996 328i BMW, scanner codes P1421 & P1423

go to the link below, type in the code and the difinition of that code comes up in a list as defined by each car maker.

http://www.aboutautomobile.com/DTC/P1494

Posted on Jan 30, 2010

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Also in modern vehicles the Engine computer will constantly adjust many variables to compensate for varience in outside enviorment, fuel quality, driving habits, current engine load etc. It often possible that if the weather outside if not near the ecu settings for weather conditions (Heat and humidity will noticibly decrease engine output, while cold dry air will add power), along with particular driving habits at the time, generally aggressive, and also the use of the new Ethanol treated fuel that we must use which makes less power and also causes the ecu to ****** the timing to avoid engine issues, you can easily 'fool' the computer into thinking that there is an engine problem simply because the vehicle is acting outside the expected data settings of the ecu at the time.

The code can also be for a more serious issue such as a failed engine part, or to indicate a incident where the motor had a problem or in the worse case may be damaged. Failed O2 sensors in the exhaust manifold that 'smell' the exhaust and tell the ecu how much unburned fuel, particulates, temp, etc the ehaust is producing are often the cause of engine lights. If that inexpensive part fails or breaks due to damage the Ecu will immediatley throw a code.

Obviously the proper thing to do is not drive the vehicle until you are able to determine the cause and reason for the light.

Luckily that is extremely easy to do. Simply take your truck to any local pep boys, autozone, or the like and just ask them to 'pull the code'. this is a service that is provided free of charge. what they will do is plug in whats called an OBD scanner (on board diagnostics) to a port under teh steering wheel and collect the error code from the ECU. They will be able to advice you as to exaclty what the code means, whether it requires andy serivce or repair or not, and also be able to shut off the light for you.

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http://www.obd-codes.com/trouble_codes/ford/

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