Question about 2003 Honda Accord 2.4 LX

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If i swap a engine on a 2003 honda accord, would i have to reprogram the ecm

Do i have to reprogram the ecm after a engine swap

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Hi not on changing the mechanical part the ecm and transponders already match as long as u dont have to change ecm no program is required ex if u have a four cyl and u installed a 6 cyl u need new ecm that wont match including the wiring and ecm that would have to be programed to match bcm body computer module danny

Posted on May 03, 2014


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Posted on Jan 02, 2017

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SOURCE: honda accord 2003 v6

If you live near an AutoZone they used to offer free check engine light diagnostics.
See what code they can retreive from the computer with their device and check it against the list of codes. It may not just be a missing Gas cap code. There are hundreds of codes computers can return.

Best Wishes.

Posted on Nov 19, 2008

  • 1 Answer

SOURCE: need radio code 2003 honda accord serial no. 12133932

Call your parts department at your local Hoda dealer and give them the serial number. It's usually a four digit number.

Posted on May 11, 2009

  • 1 Answer

SOURCE: 94 Honda Accord

my d4 is blinking also from time to time what can i do james bklyn

Posted on Jun 18, 2009

  • 918 Answers

SOURCE: my 2003 honda accord will not excedd 3000 rpms

1st check air filter and fuel filter for dirty, this cause loose power

Posted on Jul 05, 2009

  • 3 Answers

SOURCE: hey i got a 1997 honda accord the motor smoke alot

get the right wireing harness 10x easer

Posted on May 20, 2010

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