How to determine if your loan was impacted by an incorrect Equifax credit score.

Between March 17 and April 6, Equifax's coding error caused the company to provide inaccurate consumer credit scores to lenders.

Some scores were off by enough to influence a bank or other lender's decision on your loan or credit application.

Equifax said, a sizable number — less than 300,000 — saw a shift of 25 points or more due to the error.

It's uncertain when users would hear directly from their bank or other lender if an inaccurate score had a material impact on them.

"We are proactively working with Equifax and our customers to address on a case-by-case basis," a JPMorgan Chase spokesman said.

If you are unsure whether you are affected by this, you should be able to check if Equifax provided your FICO score in disclosure forms.

Even if you find that Equifax provided your credit score to your lender, this does not imply that the number was sufficiently inaccurate.