2003 Buick Century service engine soon caution light

2003 BUICK CENTURY
158,000 MILES • 6 CYL • 2WD • AUTOMATIC
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IAMVANNAN
  • MEMBER
  • 2 POSTS
The code reader indicated that the coolant temp was too low for the termostat to regulate temp. The temp seemed alright and there are no other problems experienced.
Changed the cooling pump recently.
Sep 8, 2010 at 5:58 AM
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BILLYMAC
  • ✓Experienced Mechanic
  • 2,204 POSTS
what is going on is the temp sensor is sending an incorrect reading to the ecm. need to replace temp sensor
Sep 13, 2010 at 11:49 AM
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IAMVANNAN
  • MEMBER
  • 2 POSTS
The temps seem OK. The warning appeared, cleared automatically and reappeared. The code reader came out with the warning that the temp was too low for regulation (Code 0125). The temps remained below the halfway mark and above the quarter mark on the scale.

I had recently changed the cooling pump and wondering if it had anything to do with this warning.

Would changing the thermostat fix it ?
Sep 16, 2010 at 3:16 AM
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BILLYMAC
  • ✓Experienced Mechanic
  • 2,204 POSTS
yes after researching ' i believe a t stat will solve the prob
Sep 16, 2010 at 6:01 AM
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