1995 Buick LeSabre Q&A
1995 Buick LeSabre Question: check engine light
check engine light comes on but when i shut the car off n restart it again the light stays off. mechanics telling me the light has to b on to test it (obd1), but my car has a (obd2) port under steering wheel. does the light still have to b on to get a code with a obd2 port? car must've been built late 95 n has a 96 or later hook up. obd2 don't know. - RLWISE56
Your 1995 Buick LeSabre has an OBD I system but is equipped with and OBD II style connector. Your 1995 was manufactured during the transition time form OBDI to OBDII. Your OBDI system still has the ability to store fault codes which should stay in the memory after the light goes off. Retrieving these stored codes should help I diagnosing the cause of your check engine light coming on. If there are no stored codes when the technician checks your car then he is correct in stating the light will need to be on to check the system. - Oakman
Illumination of the Check Engine Light may be the result of a loose or worn gas cap.
The cam sensor interrupter (magnet) may become demagnetized and/or fall off of the camshaft gea...
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Failure of the crankshaft position sensor, ignition control module, or powertrain control module (PCM) may cause the Check Engine Light to illuminate.
...come back to life for a few seconds, but not always. What DOES always happen: Eventually, the check engine light will turn on. Once the check engine light is illuminated, all bets are off, and you may as well...