# Reading ECU codes **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 29, 2009, 9:04am UTC](https://forums.speedlife.net/t/reading-ecu-codes/124900 "2009-05-29T09:04:24Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![imported\_Jared](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_jared/32/5660_2.png) [@imported\_Jared](https://forums.speedlife.net/u/imported_Jared)\ **Post date:** [May 29, 2009, 9:04am UTC](https://forums.speedlife.net/t/reading-ecu-codes/124900/1 "2009-05-29T09:04:24Z")
Mines ca18 ecu. Lights on ECU go: Blink…(im assuming this first light means nothing) Blink…Blink…(long pause) blink…blink…blink (short pause) (23?) blink…blink…blink…blink (4?) blink…blink…blink…blink…blink (5?) 23 would make sense for me. But if theres no long blink before does this mean its a 2 because the first one started with a 2, meaning it counts as 24 and 25? Or does it mean its just codes 4 and 5? Cause I cant even find codes for 4 and 5 Thanks…i know its hard to explain lol