Question about 1998 BMW Z3 Roadster
Why does Check Engine light come on?
BMW engine light
Comes on if DME engine management system self diagnostic fault detected. Will stay on until codes are called up and memory erased.
With OBD read the code as follows. Turn on ignition key, press accelerator pedal to the floor five times within 5 seconds. The check engine light will remain on for 5 sec , blik off, come on for 2,5 sec, go off for 2,5 sec and fault code will begin to flash. If more than one fault exist 2nd fault code will be separated by 2,5 sec pause. after fault codes there will be a 0.5 sec flash and light will remain off. to read codes again do procedure again.
Canceling of codes. make sure fault code is present (short blink and light goes out for long period), depress throttle pedal for at least 10 sec. read fault codes again and check for code 1444 (no faults stored.)
Check also the following, fuel pump, oxygen sensor, fuel injectors, engine coolant temp sensor, idle speed control valve, mass airflow sensor and too many other things.
Posted on Aug 19, 2009
My trip computer posts ppp after a winter storrage
disconnection from the battery
Posted on Sep 16, 2009
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Posted on Jan 02, 2017
SOURCE: check engine light on
If you have an Advance Auto Parts store, they will scan it for free. It would be best to have the repairs at a dealership. I can not remember what year, but I do know some older z3 once the oxygen sensor is replaced the engine control unit needs programmed.
Posted on Apr 29, 2009
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
SOURCE: my 1997 BMW Z3 1.9
What you need to do is get a scanner and pull the code(s). They will help you to know where you need to investigate next...REMEMBER the code is a clue NOT necessarily the issue. For example, a lean condition can manifest as a missfire, and you can get oxygen sensor limit errors...and these items are registering correctly (meaning replacement does nothing). Pull the codes and go from there.
Posted on Mar 24, 2011
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