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Old 12-20-2007, 04:09 PM   #1 (permalink)
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Well i found out what the Check Engine Light problem was. I took it to the shop today to get it diagnosed. He checked it and the code P.1529 showed up. He told me that its a TCM (transmission control module) problem. He said the TCM was off and that he resetted it. If the problem persists, than he told me that i'd have to get it replaced. I asked him how much it would cost to get it fixed and he said estimate 200-300 dollars. Anyone know if its an easy job to do? please let me know what u think. Thanks in advance...i miss my car
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Old 12-20-2007, 04:54 PM   #2 (permalink)
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i looked up on the forum for P1529. People who had the same problem as i did. Like the rest of them, i too had the "CLUNK" sound when the car trys to shift to 4th gear. When it cant shift to 4th gear it automatically downshifts to 3rd and it would seem like my car is in neutral. I basically have to stay below 40mph. and sometimes when im slowing down....when the car tries to get to first gear...SOMETIMES it makes a *CLUNK* sound before going to a stop. Unlike everyone elses...my check engline light is ALWAYS on. and ive been having this problem for about 4 days. I read on the forum and im thinking on replacing the speed sensors so hopefully it would fix the problem and id be able to finally drive 40mph +. Any inputs on if i should replace the speed sensors or what?
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Old 12-20-2007, 05:12 PM   #3 (permalink)
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Dear Jimmy,

I had a similar problem with a 2001 Sonata. The dealer replaced the input sensor and the output sensor. This fixed the problem for a week. The CEL light came back on.

The dealer next replaced the throttle position sensor. This fixed the problem. The car shifts better than new now.

Code P1529 is not given as a choice on the Hyundai Service website for your Accent now(just updated last night) so I can't provide better information except:

The input and output sensors are least expensive.

The Throttle Position Sensor is more expensive.

The TCM is the most expensive.

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Old 12-20-2007, 09:07 PM   #4 (permalink)
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Dear Byron,

I'm Having a hard time deciding what i should do. The shop i brought my car to says that he doesnt think its the speed sensors because when he diagnosed my CEL, the only code that came up was P1529 and nothing else. He said that p1529 deals with the TCM (transmission control module)

I dont know if i should ask him to fix what he wants to fix which would have to deal with the TCM which he said estimates to $300.

OR

should i just go with my instincts and ask him to just fix the speed sensors (which my car runs on Pulse Generator) because my only code reading says p1529 and nothing else that has to do with sensors or anything else such as the other codes p0733, or p0734, or p0715 p0722. Any inputs or suggestions are greatly appreciated.
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Old 12-27-2007, 08:18 PM   #5 (permalink)
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I'm pretty sure 1529 reads something like TCM request MIL on. This means that the TCM has commanded the check engine light on, and that there are codes in the TCM. TCMs can't be read by the cheaper code readers, so unless this shop has an enhanced scanner you won't know what codes the TCM has in it.
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