Last post on Dec 06, 2013 at 12:14 PM
You are in the Honda Civic Hybrid
What is this discussion about?
Honda Civic, Hybrid Cars, Coupe, Sedan
#1155 of 1532 Re: 2003 Honda Civic Hybrid [sak6]
Sep 08, 2011 (9:24 am)
P1570 is a low voltage on one of the pairs of sticks of battery cells. While it can be caused by a broken wire or a bad socket in the MCM, it is usually caused by a worn battery and is triggered either by the car sitting for days, or by heat. The procedure to test it is to check all the voltages on the sticks and make sure they are above 7V. If they are, then try a "known good" MCM module to see if the problem goes away.
The problem is that after the error occurred, you started your car and it charged the battery up a little bit and now they all are above 7V. When the car applies a load, they drop down and trigger the error but bounce back up once the car is turned off.
Replacing the MCM will not solve the problem and $2400 is highway robbery for an $800 part and 20 minutes of installation labor.
If you still want to try an MCM before biting the bullet and repairing or replacing the battery, you can get one at a junkyard for $100 or contact me and I'll lend you one. I have instructions (with pictures) on how to install it. It is easy to do with hand tools (easier than changing a car stereo).
P1435 is a "Charge/Discharge balance problem". The instructions state to fix any other codes first before looking at this one (because it almost always goes away). If not related to an IMA battery error, then it is a problem with the battery cables that go to your 12V battery. The likelihood of that being the case in combination with the P1570 is extremely low. The P1435 will go away by itself.
P1600 = IMA light on.
P1601 = IMA error without IMA light on.
#1156 of 1532 Re: 2003 Honda Civic Hybrid [Ogre_GEV]
Sep 08, 2011 (10:06 am)
Thanks for the Quick update...
I got the Diagnose detail for P1570 from dealer and as per diagnosis, the tested voltage and everything where above 7V. Since they fon't have known good MCM, they wanted to buy new one and so they are charging me 2400 ( 1970 part + labor).
if replacing MCM didn't solve problem what other reason could be?
#1157 of 1532 Re: 2003 Honda Civic Hybrid [sak6]
Sep 08, 2011 (10:59 am)
As I said, under load the battery is dropping way below 7V, but when you turn off the car, the voltage pops back up. The voltmeter that they are using is a very light load.
You have one or more bad sticks in your battery, but if you want to be sure, contact me by email and borrow an MCM. DO NOT SPEND $2400 for something you don't need. I have NEVER seen a bad MCM and I've handled dozens of batteries with P1570 errors.
#1158 of 1532 2009 Honda Civic Hybrid battery problem?
Sep 12, 2011 (7:48 pm)
Hi all. I have a 2009 Honda Civic Hybrid that I purchased new in April 2009. In a nutshell, I've been having problems with the autostop feature disengaging frequently when I'm at a full stop. The car often rolls backwards when I remove my foot from the breakpad, so I have to be quick to accelerate. It is also very sluggish upon initial acceleration from a stopped position. I've taken it to the dealer many times and, just today, the mechanic was able to recreate the problems I've had. He charged the battery (said this was the solution because he thought it might happen when it dropped below two bars) and the autostop engages...for now. Unfortunately, the dealer pretty much said, yeah, you've got a problem, but we don't know what is wrong and cannot advise. They gave me my keys and I feel like I should be preparing my car for hospice. I'm wondering why the battery drops below two bars in the first place and what can be done to fix that problem, assuming that is the root cause. Does this seem like a battery problem, electrical, both, something else? Please advise
#1159 of 1532 ECM upgrade and IMA failure light
Sep 14, 2011 (11:28 am)
Fellow sufferers, I will update this post when the problem is fixed. I do have an understanding customer oriented service department so I'll be lucky since both the IMA battery and ECM have to be replaced.
My vehicle is a 2005 model with 5 speed manual transmission. The problem begun when the ECM had to be updated. Now the IMA doesn't hold the charge and the IMA light plus the check engine light are on constantly.
Will keep you posted.
#1160 of 1532 Re: ECM upgrade and IMA failure light [jotage]
Sep 15, 2011 (1:12 pm)
Here is the update on my problem.
First, the emissions warranty under Federal law covers the IMA and all related items for 8 yrs/80,000 miles whichever comes first. If your vehicle is an Ultra Low emissions model, in California and other states the warranty is 15/150!!
Second, because the IMA failure indicator came on while the battery was completel
discharged, and the engine failure indicator simultaneously lit, there was no question about replacing the IMA battery under warranty, as well as the failed ECM.
So it helped to have a customer oriented service department to make this as painless as possible.
#1161 of 1532 Re: Still not happy, but... [slider162]
Sep 15, 2011 (1:26 pm)
After a month now, I can say that the gas mileage isn't any better after the update. It isn't any worse either. The meter recals if the car has been sitting more than 6-8 hours. It recals in the morning when I leave for work and it recals on my way home from work. I'm going to take it back one of these days and have the dealer keep it overnight so they can see what is happening.
#1162 of 1532 Re: Still not happy, but... [slider162]
Sep 19, 2011 (10:26 am)
nothing will be done. Honda will say that this "may occur" per the manual, so it's "normal" operations per their "engineers". which means that you're screwed
#1163 of 1532 Re: Still not happy, but... [viaw]
Sep 19, 2011 (11:01 am)
I agree. You have to get the battery to fail and throw a code and turn the IMA light on.
#1164 of 1532 2006 model made in Japan
Sep 19, 2011 (11:11 am)
I'm yet to have any problem with the IMA Battery, my mileage is still great, 45mpg all around and over 50 mpg on long highway trip with cruise control. I leave in Connecticut in very hilly terrain, my wife drives a lot of highway miles 2 or 3 times a week, she commutes 11 miles to the office on other days. I refused the patch last time I took the car to Honda. I think the problem with most members on this forum is heat related and not enough highway driving to fully recharge the battery. And also letting the car sit a few days seems to deplenish the battery a bit. I don't see what else would give some cars problems and not others. I do all my maintenance on the car oil, engine and tranny and brake jobs. I only bring the car to the dealer for recalls. A couple so far. My oxygen sensor died the first year I owned the car. Other than that after driving it for 90k+, we're still happy with the car mileage.