05hybrid Posted January 19, 2009 Share Posted January 19, 2009 I own an 05 Accord Hybrid. It's got 64k miles and til now has served me well, terrific pick up, great mileage, just a sweet car. Recently I had the check engine light come on, along with the IMA light. After making the appointment at the Honda shop the lights disappeared, but I brought it in anyway. The stored codes that came up were P0A7F hybrid battery pack deterioration, and P0AC4 hybrid powertrain control module. These were disconcerting, but the shop recommended I wait til they reappear and bring it back in for further diagnosis. They cleared the codes, and didn't charge for the diagnosis since no work was done. While riding around during the following week I noticed the Integrated Motor Asssist didn't kick in, the car had a clunky feel, and sounded like a purely gas powered vehicle. My combined mpg dropped from about 32 down to 24. It clearly wasn't a hybrid anymore, the eco lights that show the battery charging, and assisting came on infrequently. Then on a cold morning, we couldn't push the button in on the shift cloumn, so we couldn't move the car. Later in the day, the button worked, so we took the car out, and while I was parked waiting for my wife to come out of the store, the car shut off by itself. We coulnd't get it restarted. Two days later I had it towed down to the dealership. The car has a 70k mile warranty on the hybrid battery, and figuring it was a warranty issue, I took it there rather than Formula H, who gave the original daignosis. After looking at it the service agent called and recommended I 1) replace the regular car battery and 2) run a computer software update on it. I mentioned the codes that came up the last time which suggested the hybrid battery was the issue, but he said the regular car battery in combination with a possible glitch in the software could make any number of codes pop up. He also mentioned that the software update which costs $180, is necessary in order to further diagnose the problem. I agreed to it, but am not convinced the software update is necessary, and on top of that, should be offered free of charge by Honda- any other software company would offer free updates if something needed fixing. I'm just posting this to see if anyone else has had a software update, and whether it fixed any problem they were having? I looked for accord hybrid issues, but didn't see any posted here. Has anyone experienced trouble with a hybrid battery pack or powertain control module? Thanks for any and all response. John Link to comment Share on other sites More sharing options...
James Matteu Posted January 20, 2009 Share Posted January 20, 2009 There is one TSB for your vehicle Report Date : January 19, 2009 at 08:01 PM Search Type : VEHICLE Year : 2005 Make : HONDA Model : ACCORD HYBRID Results : 1 | All records displayed Make : HONDA Model : ACCORD HYBRID Year : 2005 Manufacturer : HONDA (AMERICAN HONDA MOTOR CO.) Service Bulletin Number : SB-08-062 Date of Bulletin : AUG 06, 2008 NHTSA Item Number : 10026884 Component : ELECTRICAL SYSTEM:BATTERY Summary : HONDA: HYBRID BATTERIES CAN BE AFFECTED AND DAMAGED BY EXCESSIVELY HIGH TEMPERATURES. *PE Link to comment Share on other sites More sharing options...
05hybrid Posted January 20, 2009 Author Share Posted January 20, 2009 Thanks James, that's good to know. I don't have a garage, the car is out in the sun during summer, but it's New York heat, not Arizona heat. How hot would it have to be? Link to comment Share on other sites More sharing options...
James Matteu Posted January 20, 2009 Share Posted January 20, 2009 I have no idea, I pasted that info from the NHTSA: National Highway Traffic and Safety Administration Link to comment Share on other sites More sharing options...
philnyc Posted February 4, 2009 Share Posted February 4, 2009 Hi John, I too have an '05 Accord Hybrid and the check-engine and IMA lights turned on last week. I just borrowed one of those code readers and I see the same two error codes you mentioned. Were you able to resolve the problem? Any suggestions for me? After the lights went on, I noticed that the hybrid elements haven't been behaving normally. The assist and charging indicators turn on but only very briefly, and the eco light hasn't been turning on at all. In fairness, I haven't taken the car out on the open road (only city driving) since this problem surfaced so it may be unrelated. Other than that, I haven't noticed any problems. -phil Link to comment Share on other sites More sharing options...
RStires Posted February 12, 2009 Share Posted February 12, 2009 We also have an '05 Accord Hybrid with 72711 miles and yesterday had the EXACT same problem that John described (the fault lights, fault code, and battery needing replacement). The dealership here in Seattle found that the software in the computer needed to be updated. I researched and found (on the EPA websight: www.epa.gov/otaq/cert/recall/2006recallreport6.pdf) that there is a Technical Service Bulletin (TSB#05-038) that covers this problem. The manufacturer recall numbers on the EPA report are EDIR-05-012-00 and EDIR-05-012-01. The EPA report states that the battery may become damaged, too. I am currently butting heads with the service department manager about this because our car is out of warranty and we were charged for the diagnostics used to determine that the software needed updating. The battery issue will also become a topic of discussion. Ron Hi John, I too have an '05 Accord Hybrid and the check-engine and IMA lights turned on last week. I just borrowed one of those code readers and I see the same two error codes you mentioned. Were you able to resolve the problem? Any suggestions for me? After the lights went on, I noticed that the hybrid elements haven't been behaving normally. The assist and charging indicators turn on but only very briefly, and the eco light hasn't been turning on at all. In fairness, I haven't taken the car out on the open road (only city driving) since this problem surfaced so it may be unrelated. Other than that, I haven't noticed any problems. -phil Link to comment Share on other sites More sharing options...
neerjal Posted January 23, 2011 Share Posted January 23, 2011 We also have an '05 Accord Hybrid with 72711 miles and yesterday had the EXACT same problem that John described (the fault lights, fault code, and battery needing replacement). The dealership here in Seattle found that the software in the computer needed to be updated. I researched and found (on the EPA websight: www.epa.gov/otaq/cert/recall/2006recallreport6.pdf) that there is a Technical Service Bulletin (TSB#05-038) that covers this problem. The manufacturer recall numbers on the EPA report are EDIR-05-012-00 and EDIR-05-012-01. The EPA report states that the battery may become damaged, too. I am currently butting heads with the service department manager about this because our car is out of warranty and we were charged for the diagnostics used to determine that the software needed updating. The battery issue will also become a topic of discussion. Ron Hi Jon and Phil, I have similar problem. My HAH 05 was nice and fine. Today I started my car and I smelled gas inside my car then realized IMA and check engine lights were both on. We had very bad temperature for last few days at -10F or so....how did you guys fixed your problem? Should I take it to dealer...I still have my honda care warranty till 6 more months....any suggestions will be greatly appreciated..... Link to comment Share on other sites More sharing options...
Mtsflorida Posted April 27, 2013 Share Posted April 27, 2013 I started having the IMA light come on nov 2010 at 45K miles. The light went out a few weeks later then so often would come on, and accompanied by the engine check light. So this time when it came on I took to dealer before the 8/80K comes up. That said 4 fault codes came up, 2 front engine battery (battery bad) and 2 faults saying needs software update. As far as the battery it's only a couple of years old and starts quick, but surprisingly they didn't try to sell me an expensive $100-$150 battery, but the update would cost $110 at Charlotte County (Florida) Honda, that was the first thing he said, I said I can't afford that right now ( the car cost almost 40k when I bought as a demo, but in my business I only had a few hundred left). I called The dealer I bought it from 40 miles away and offered my a more special price if I took it directly to a certain service rep at half that price. Charlotte didn't have hybrids then they were hard to come by in the spring of 2005 in fact they added 3k to the price but subtracted 2k for having 5k miles on it. There has to be a way to update the software without paying such an outrageous price, if I would have know this I wouldn't have bought the car. Every time the IMA and or check engine light comes on the hybrid will not go to Eco mode, but it will usually charge and assist but only 2/3rd's the time. It also stays running at stop about 2/3rd's the time even when the hybrid batteries are up there. I absolutely think after my ex pierce and also reading these post that the dealerships are only telling half truths. There is a problem with the module unlike what the said and the batteries in the back as we'll, there is definitely a recall issue here and we need to unite and contact the corporate office along with the NTSB. It was no fault of ours that these things would cost us unforeseen bills, any court would back us up on that. Link to comment Share on other sites More sharing options...
xplexus Posted July 23, 2013 Share Posted July 23, 2013 Geeze louise! It looks like Honda dealerships all play by different rules! I own a 2005 and a 2006 HAH. My opinion is that they are great vehicles and I am extremely pleased with every aspect. In fact, if I could find a 2007 HAH I might buy it! However, the 2014 HAH will be a plug-in vehicle, I've already ordered one! Maintenance issues, sure, all vehicle will require maintenance. Here's my story: 2005 HAH has 85K miles and I've gotten a IMA battery problem, big deal, dealers want about $3K to replace and warrant battery for 12 months, not likely! Reconditioned batteries can be purchased for about $1.6K and installed in my area for $350 with a 18 month warranty! If you are mechanically and electrically adept you may want to recondition the batteries yourself for about $500 plus a day or two of downtime, no biggie if you got the skills! So far no warranty issues have arisen with the 85K miles on the 2006, it's been a peach of a car. I'll do the minor repairs for both now till I trade in two, three, or four years depending on how the 2014+ HAHs perform. Heck I may just search for a 2007 too then mothball all of them for future classics! What pisses me off is the dealership service. IMHO a vehicle owner should be able to get consistent warranty service from any Honda dealer anywhere. I use two dealerships, Bartlesville Honda and Don Carlton Honda. B'ville Honda is very professional, provided all software updates and made EVERY major repair as needed under warranty. Don Carlton is only competent enough to change oil, oil filter, and cabin filter. Don Carlton even charged me to read the OBD2 Diagnostic Trouble Codes! Don Carlton one time said the rear tire alignment could not be adjusted and the tire failure was due to me not rotating the tires! B'ville Honda repaired the factory defective axle under warranty (I did have to buy a set of new tires!) and alignment made a very reasonable cost. I will not rotate tires, too many road hazards out there on the streets to justify rotation verses something gets knocked out of alignment, so I watch my tires closely. So buyer beware! Honda dealerships are not equal. So, I'll buy new or certified and get warranty service from B'ville Honda and get my oil and filters changed at Don Carlton unless I do them myself with other minor maintenance like brake pads, fluids, lights, belts, hoses and such! Happy motoring to all from Tulsa Oklahoma! Link to comment Share on other sites More sharing options...
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