2004 Honda Civic Question: Article says there is a software update for PCM in a 2004 Honda Civic.

Cant seem to locate a T.S.B. for this problem..your help is really appreciated cuz the dealers seem to be clueless. VIN = 2HGES26774H532171. Maybe not an article...it was a posting on Repairpal for this problem. I googled this and Repairpal had some info saying their was a software update...not sure of who posted or the accuracy of the info...just want to run out all leads before I pull PCM and buy a salvage PCM. I am going to chec for any signs of water damage to PCM tomorrow...dealer service said the drain line for evaporator has been know to plug and drip water on PCM...gonna look tommorrow. :/ Not sure what you mean my DTC?

According to VIN status your last name starts with BE , if correct , it shows no RECALLS (not the same as service bulletins).For some reason The service bulletins won't come up , but if you know the specific trouble code(s) and post , I can check tomorrow at work. (DTC= Diagnostic Trouble Code)

I believe the codes were p0135 and p0141. The codes correspond to the two O2 sensors on the civic. I am going to scan it again tomorrow and verify these codes. I will also pull the PCM and look at it for the reference number I need to replace it.

Don't waste money on an unneeded PCM. IF you change it , you will need to program the immobilizer system to it. Most likely meaning a tow bill to dealership and leaving the original PCM in it for the process. Let me check tomorrow to see what other diagnostics they recommend , before spending more money. The car is running , right?

Yes...just need to get rid of the light so I can get my inspection sticker for the year. I would swap out the PCM at the dealership for the programming. Do not want to do that if there is another answer to this nightmare. Appreciate it ...I like this site!!!

///////////////........FOUND IT........P0139(SECONDARY HEATED OXYGEN SENSOR (SENSOR 2) SLOW RESPONSE. SERVICE BULLETIN 07-019. ---"Probable cause is the ECM/PCM misinterprets the secondary heated oxygen sensor output and sets DTC P0139" CORRECTION- UPDATE PGM-FI (PCM). IF THE DEALER HAS ALREADY CHECKED YOUR CAR PROPERLY WITH THEIR SCANNER , AND THEY STILL SAY 'NO UPDATE NEEDED' , THEN REPLY ON THIS POST. BE SURE TO REFERENCE THE SB#07-019. IT IS NOT CONSIDERED WARRANTY. NORMAL CHARGE SHOULD BE .3-.5 Hr LABOR. ALSO BE SURE TO PUT SOME MILES ON CAR(ASSUMING THIS IS FOR EMISSIONS INSPECTION) SO ALL THE REQUIRED READINESS MONITORS WILL 'SET'. GOOD LUCK.