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2002 Honda Accord - 2.3L VTEC With P1259

Posted: Mon Jun 11, 2012 2:03 pm
by jbadenoch
Having some trouble diagnosing a P1259 on this 2002 Accord.

Got down to step 14 on the Mitchell diagnostic procedure and everything checks out so far. Also checked for pin fit and that the pressure switch connector wasn't swapped with the fan switch connector. Can't go much further with Mitchell diag. without the pressure gauge adapter (boss says will buy if he needs to). Both the solenoid and pressure switch PIDs remain OFF no matter what.

Just wondering if anyone had any more insight into this problem.

Re: 02 Honda Accord 2.3 vtec with P1259

Posted: Mon Jun 11, 2012 3:07 pm
by brianp87
Whats the oil like new? Level? Mileage on vehicle any chance of a restriction. Id start with a bg engien flush with fresh oil and then go from there? Cost the least and may save you from banign your head on the desk

Re: 2002 Honda Accord - 2.3L VTEC With P1259

Posted: Tue Jun 12, 2012 4:13 am
by jbadenoch
167k miles. The oil was a quart low and the had recently been changed. Customer says the problem has been happening for some time (ever since he had a timing belt replaced).

Re: 2002 Honda Accord - 2.3L VTEC With P1259

Posted: Tue Jun 12, 2012 5:19 am
by steven kiser
We always * when a customer with holds something that could have made our life easier. You have the answer here. The vvt is controlled by pressure and if not set up correctly can give a false positive because it's not reacting correctly.

Re: 2002 Honda Accord - 2.3L VTEC With P1259

Posted: Tue Jun 12, 2012 7:37 am
by jbadenoch
we are going to get vehicle back in here to pull timing covers and check timing marks, thats my suspect, Bob in SC. Thanks for your input gentlemen.