Volvo Forums - Volvo Enthusiasts Forum - One last PO128 question

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- - One last PO128 question (https://volvoforums.com/forum/volvo-s40-11/one-last-po128-question-25658/)

mixpat

12-16-2008 10:09 PM

One last PO128 question

Hi. I have an '01 S40 with the oh so popular po128 check engine code. I followed everyones advice and changed the coolant temp sensor AND thermostat. 2 days later, the check engine light is back on and the po128 code returned. Anyone have any ideas about my next step here? Thanks, in advance.

tech	12-17-2008 07:20 AM

RE: One last PO128 question

How fast did the code return?

Maybe the computer didn't respond fast enough to seeing the repair being done.

mixpat

12-17-2008 08:19 PM

RE: One last PO128 question

Within 2 days.

tech	12-17-2008 09:11 PM

RE: One last PO128 question

Did you try resetting again and see if they come back fast?

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