I get a ''P1529'' error code, on our 2001 Hyundai Elantra,but cannot find what it is. Ron Hagler

P1529 is a fault code???
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careucar.com

Check the level in the ******. Make sure that oil is there and topped up if necessary. It should be on the upper marks. Good luck.

a common problem is the VSS- vehicle speed sensor. have you been having trouble with the accuracy of your speedometer? P1529 means the power train control module is turning on the check engine light.

P0500 and P0501 are vehicle speed sensor codes P1529 I can not find in any of my data bases. if you are using a generic scanner/code reader it may be a false display or for some reason it's not listed in my reference materials. I have 4 different sources 1 being factory material?

P1529 means the TCM (transmission control module) has requested that the ECM (engine control module) turn on the check engine lamp. All I can tell you based on this information is that the TCM has seen something abnormal. To find out what abnormal condition the TCM saw, you'd need to retrieve the DTCs (diagnostic trouble codes) from the TCM. The most frequent culprit is either the input or output speed sensor, but there's no way to know whether they may be the issue without the TCM DTCs

P1529 indicates that the TCM [Transmission Control Module ] has requested the engine control module (ECM) to turn on the check engine lamp. P1529 is related to your vehicle speed sensor problem.

Whenever the 'CHECK ENGINE' light comes on, the ECU (Engine Control Unit) sets a Diagnostic Trouble Code (DTC). These codes identify the particular engine management system which caused the light to come on. P1529 is a TCM MIL request to the
ECM.
TCM = Transmission Control Module. The sluggishness is really what is known as 'fail safe' mode (3rd gear). You should have had other codes besides P1529 to identify which system in the transmission caused the problem.

P0715 is the imput speed sensor is open or shorted. The P1529 is the transmission control module(computer) requsting the check engine light to turn on. These sensors are prone to going bad.

Satlaan: You need an odb2 scanner to extract the trouble codes. If you don't have one you can buy one for around $30 from most auto part stores. Alternatively, some auto part stores (Auto Zone for example) will read your trouble codes for you, for free. The trouble codes could be anything from a loose gas cap to a misfire, without the scanner there is no way to know.

Rashidas: How did you fix the speed sensor? This is not the speedometer cable that bolts to the transmission, but a separate sensor inside the right side front wheel behind the brakes.

This AllExperts.com post explains it pretty well.
http://en.allexperts.com/q/Hyundai-Repair-815/hyundai-elantra-fault-codes-1.htm

Don't just assume it is the sensor though,, that wiring gets beat up by all the **** you drive over, so look at the wiring carfully.

Hope that helps,
Ellie