# 2007 Acura MDX - Lost power lots of codes **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** acura, engines\ **Created:** [January 15, 2023, 5:14pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499 "2023-01-15T17:14:20Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 15, 2023, 5:14pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/1 "2023-01-15T17:14:20Z")
I was driving my 2007 Acura MDX, when it suddenly lost power, and multiple error messages, flashed on the screen, “charging system: P0562, Battery, Transmission Code: P0872, All Wheel Drive:77, Vehicle Stability Assist: 61-12 error’. I was a few blocks from home, and was able to drive the car home. Once I got home the battery died. I called AAA. They came and told me I had dead battery. They replaced the battery, and I thought my problem was resolved. The next day, when I drove the car, the engine was making a loud noise, and the car didn’t seem to have much power. I haven’t driven the car since. My mileage is 120,000 miles. ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [January 15, 2023, 5:36pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/2 "2023-01-15T17:36:31Z")
Sorry about your problem. you need to tell us what kind of a loud noise. if it is just a loud screeching sound, then it could just be a locked-up alternator. a bad alternator will cause your vehicles battery to die. and low voltage will cause the electronics to go crazy. ---
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 15, 2023, 7:08pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/3 "2023-01-15T19:08:13Z")
The noise is not a loud screeching sound. It’s more of a loud hissing sound, that can be heard above the engine. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [January 15, 2023, 7:17pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/4 "2023-01-15T19:17:07Z")
A failing alternator can make a humming or howling sound. ---
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 15, 2023, 8:30pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/5 "2023-01-15T20:30:35Z")
If my problem is the alternator, is it an expensive fix? Thanks ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [January 15, 2023, 8:36pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/6 "2023-01-15T20:36:40Z")
Replacement should be less than $1,000. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [January 16, 2023, 12:18pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/7 "2023-01-16T12:18:19Z")
After the battery was replace did any codes remain? What ever the cost, likely will be less than several payments on a replacement vehicle. ---
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 16, 2023, 4:46pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/8 "2023-01-16T16:46:40Z")
No I don’t see the codes now. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [January 16, 2023, 6:27pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/9 "2023-01-16T18:27:01Z")
Well then it is time to locate the source of the hissing. Could be a pulley, such as the belt tensioner. Or as Nevada\_45 mentioned the alternator, if the bearings in the alternator are going bad, as far as I know, replacement of the alternator is the only solution. ---
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 16, 2023, 6:46pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/10 "2023-01-16T18:46:27Z")
Just checked under the hood. The loud whining sound seems to be coming from the belt. It’s very loud. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [January 16, 2023, 6:51pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/11 "2023-01-16T18:51:25Z")
Remove the serpentine belt, test each pulley by hand. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [January 16, 2023, 7:09pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/12 "2023-01-16T19:09:43Z")
The noise is usually cause by a shorted rectifier bridge in the alternator, you won’t be able to replicate that by hand. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [January 16, 2023, 10:56pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/13 "2023-01-16T22:56:08Z")
I guess I concur but it really needs to go to the shop. I had two issues with my 08. There was a battery sensor that failed but gave me messages. The other was a belt noise after putting on a new belt. They ended up putting a timing belt kit to get rid of the noise. All under warranty though. ---
**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\ **Post date:** [January 17, 2023, 3:15pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/14 "2023-01-17T15:15:10Z")
Take it to a good, independent mechanic and have the charging system tested. ---
**Author:** ![SteveE18](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@SteveE18](https://community.cartalk.com/u/SteveE18)\ **Post date:** [January 17, 2023, 6:43pm UTC](https://community.cartalk.com/t/2007-acura-mdx-lost-power-lots-of-codes/188499/15 "2023-01-17T18:43:49Z")
I’m making an appointment with an independent shop that I’ve dealt with before. Thank you all for your input.