Hi, I have a 2002 Buick Lesabre Limited with a SERVICE ENGINE LIGHT problem. Scan showed CRANKSHAFT POSITION SENSER. Had the senser replaced, light came back on, before I got home. Had sen replaced

10

Asked by Jun 18, 2014 at 06:35 PM about the 2002 Buick LeSabre Limited Sedan FWD

Question type: General

Had service engine soon light.  Scan showed CRANKSHAFT POSITION SENSOR,  had sensor replaced, and light came back on before I got home. Had sensor replaced second time, light came on before I got home. Disconnected battery, light back on. Had scan reset two more times. Still have SERVICE ENGINE SOON light.

4 Answers

261,665

What is the four digit code you are getting? A code for a specific sensor, mean the sensor is detecting a problem, not that it is faulty.

3 of 3 people found this helpful.
10

Tom. Thanks for the answer. I don't know the code. The mechanic that installed the sensors didn't tell me the code. Then I had it read at Auto Zone, and then Advance Auto, neither of them told me the code. I'll go back and have it read again and get the code.

1 of 1 people found this helpful.
105

One thing you might try is disconnect the battery, wait 5 minutes and reconnect. If this does not help you have a problem.

1 of 1 people found this helpful.

My mom's got the same car. It's probably your PCM if you've had the sensor replaced twice and it still pops that code. A faulty PCM can shoot out all kinds of bad codes because the computer no longer recognizes the voltages it is receiving from the sensors as normal because the computer is no longer functioning properly. You can simply replace the PCM or to have the diagnosis confirmed you had to take it to a shop that can put it on a computer. NOT a handheld OBDII code reader, but an actual diagnostic computer that can do KOEO (key on engine on) diagnostics. This way they can see what the computer sees as the engine is running and see if the computer is blind to the sensor, indicating a bad PCM (powertrain control module).

Your Answer

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has 1,720 nationwide LeSabre listings starting at $999.

ZIP:

Buick LeSabre Experts

  • #1
    Tom Demyan
    Reputation
    2,310
  • #2
    John Saffrahn
    Reputation
    2,050
  • #3
    Austin Gaboda
    Reputation
    1,450
View All

Related Models For Sale

Used Chevrolet Impala
534 Great Deals out of 34,798 listings starting at $990
Used Buick Regal
175 Great Deals out of 8,002 listings starting at $5,499
Used Buick Century
733 listings starting at $1,700
Used Honda Accord
1,099 Great Deals out of 65,586 listings starting at $561
Used Chevrolet Malibu
1,024 Great Deals out of 62,769 listings starting at $880
Used Cadillac DeVille
3 Great Deals out of 1,515 listings starting at $1,999
Used Toyota Camry
924 Great Deals out of 89,691 listings starting at $300
Used Chevrolet Tahoe
809 Great Deals out of 41,868 listings starting at $1,980
Used Lincoln Town Car
27 Great Deals out of 1,713 listings starting at $1,004

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.