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2003 Buick LeSabre Check Engine Light Due to Ignition Related Failures

Failure of the crankshaft position sensor , ignition control module , or powertrain control module (PCM) may cause the Check Engine Light to illuminate.

Affected Model Years

This issue affects Buick LeSabre model years 1997, 1998, 1999, 2000, 2001, 2002, 2003, .

19 people reported this problem

  • 2003 134,000 Miles
    The light service engine lite comes on. I had it fixed about a month ago. Was on a trip and the light came on again. Checked all fluids and they were fine. This costs quite a bit of money.
  • 2003 0 Miles
    Check engine light stays on. Have reset it about 5 times and will still come back on
  • 2003 138,203 Miles
    Same issue with Throttle Positioner being dirty or worn in conjunction with the Mass Air Flow Sensor failure. There were conflicting error codes when the check engine light came on causing me to change both components at the same time.
  • 2003 83,000 Miles
    had front brakes pads and rotors replaced, light came on had a bad valve it was replaced but it came on again another problem it is on again. \I hear a slight noise in left front wheel area, like a stone in tread wood make . what to do?I have heard that the 97 brake fluid should be purged and fluid replaced is this true?

Buick LeSabre 2003 Common Problems