2001 Buick Century P1404 Code

2001 BUICK CENTURY

EARL

MEMBER
1 POST

My 2001 Buick Century with a V6 engine with 35,685 miles had msg to service engine soon.
I went to Auto Zone and they said that it showed an error code of P1404 which stated "B circuit malfunction / EGR temperature sensro circuit". Where is this located on my Buick, is it hard to replace, is it expensive?

Would grearly appreciate your response.

Thanks,

Earl

Feb 6, 2007 at 6:35 AM

SERVICE WRITER

✓Experienced Mechanic
9,123 POSTS

Earl,

You don't likley need a part replacement, more likley the pcm calibration needs to be updated. Some independent repair shops can do this, more typically a/c delco sponsored shops
Look at the top right of this site:
http://198.208.187.182/internet/InternetMain.jsp

or the dealer can verify if your calibration of the pcm is to date. Expalin the situation and have them check for the current version you have and the most recent one released. Refer them to TSB #01-06-04-018.

Feb 6, 2007 at 7:23 AM

Suggested Repair

Have a dealer or ACDelco-sponsored shop verify the PCM calibration against the latest release and update it if needed, referencing TSB 01-06-04-018. A part replacement is not the first step.

Conversation Summary

The owner of a 2001 Buick Century with a V6 reported a service engine soon light. AutoZone read code P1404, described as a B circuit malfunction or EGR temperature sensor circuit fault, and the owner asked where the part is, how hard it is to replace, and the cost. The expert said a part is likely not needed and that the PCM calibration more likely needs updating. They advised an independent shop, an ACDelco-sponsored shop, or a dealer to compare the current calibration with the latest release and referenced TSB 01-06-04-018.

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2001 Buick Century P1404 Code

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