Q: I have 2 codes for my Honda Accord Hybrid 2005, P0AC4 and P0A7F, I am wondering what the severity of these codes are the cost?

asked by on March 01, 2018

I have 2 codes for my Honda Accord Hybrid 2005, P0AC4 and P0A7F, I am wondering what the severity of these codes are as well as the cost? I have done some research and but am unsure if the cost will be significant. The P0A7F: Hybrid Battery Pack Deterioration The P0AC4: Hybrid Powertrain Control Module Requested MIL Illumination

Not sure how familiar you are with hybrid vehicles, but what are your thoughts on probable cost of repair? Also, is there anything I could do at home to try and lessen the repair cost? My friend and I both have worked on cars before.

Best, Hudson Forrester
My car has an automatic transmission.

The cost of the repair is unknowable until the precise failure is pinpointed. However, it is certainly in the range of close to zero to $3,000. Zero represents a circumstance where the fault code reflects a loose wire or high resistance connection, while $3,000 represents the cost of replacing the entire IMA battery assembly (Honda OEM part no.: 1D070-RCJ-306RM). P0AC4 may be an artifact (aka, "informational code"), that is that code may have set as a consequence of the possibly faulty battery that is implicated in the other code P0A7F. If the battery is original and the vehicle has over 100,000 miles, my "guess" is you have a battery fault of some sort and thus the diagnostic focus would begin with the battery pack including physical connections, any outward indicators of trouble and then detailed and methodical (cell by cell) voltage and resistance testing, much of which is easier if you have an appropriate scan tool. As far as the technology, and your well-placed concern about the economics, really the principal thing you can do to reduce the cost of servicing a vehicle like this is obtain the Shop Manual, follow the instructions, and perform the diagnostic. If and once a fault is pinpointed in the battery you would then have to make a decision about repair versus replace. I do not recommend repairing these assemblies, whether by yourself or others. If available, buy a new battery pack and save yourself tons of diagnostic headaches going forward. If one cell is bad, the others are not far behind. Indeed during testing of the battery pack, once you find your "first" anomaly, replace the battery pack. Hybrid vehicle diagnostics, where OBD-II trouble codes have been stored by the PCM, is handled the same as any other check engine light diagnostic. If you desire testing of the battery pack to determine if it is the cause of the deteriorated battery code, please request a Check Engine Light diagnostic and the responding certified mechanic will get these two codes resolved. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

What factors affect fuel economy?

Your Accord came with a window sticker that explained the miles per gallon the car was rated for under different driving conditions, such as highway driving, city driving, and also provided a combined total. It’s important that you understand these...

05 ford explorer cranks wont start have spark fuel pump is workin what else cld it be??

Hello, thank you for writing in. There are several other tests that you will want to run on the vehicle, or have tested. To start, although you do hear the fuel pump running, the fuel filter or a line may...

Window not working

There are a few reasons why the window in your Honda Civic will not roll up or down. The issue may be as simple as a blown fuse, or something as serious as a bad window motor. There may also...

Related articles

The Best Used Cars to Buy If You Just Had a Baby
Having Having a baby will completely change your life. Your activities and hobbies will change. Your sleeping patterns will change. Chances are good that you’ll also be looking for a change in vehicles. You need to ensure that your car...
A Buyer’s Guide to the 2012 Honda CR-Z
In In the tradition of the sporty CRX, the CR-Z boasts some of the similar look, without quite the same amount of pep. That’s because the CR-Z is Honda’s eco-friendly offering and a pretty unique one to boot – (as...
The Best Used Cars to Buy If You’re a Realtor or Real Estate Agent
If If you make your living as a realtor or real estate agent, you may have a number of considerations when it comes to purchasing a used vehicle. The most common considerations are budget, ability to transport people, and comfort....