2001 Sonata Error Codes 1529 720 (Full Version)

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2001 Sonata Error Codes 1529 720

  

nmunafo -> 2001 Sonata Error Codes 1529 720 (1/16/2008 6:06:53 PM)

I just bought a 2001 Sonata with 160k on it on Monday. I took it in for state inspection today, and it passed, but the mechanic told me that two codes had come up - 1529 and 720. I'm trying to figure out what these codes mean. Does anyone know?

I had noticed my transmission sticking more today than previous times I drove it, and I'm pretty sure it was having difficulty shifting... However, it had seemed to get better... I went out to try to see if I could make it happen with a former mechanic, and it didn't happen, but the check engine light came on.

Are the light and codes related?

  
madindian1 -> RE: 2001 Sonata Error Codes 1529 720 (1/16/2008 7:32:23 PM)

p1529 is telling you there is something wrong with the transmission. p0720 i think is a speed sensor don't remember right now. take it to the dealer show be the easiest fix.

NovaResource -> RE: 2001 Sonata Error Codes 1529 720 (1/17/2008 5:49:54 AM)

Yes, the 2 codes are related.  The P1529 code just means that the TCM (transmission control module) sent a signal to the ECM (engine control module) to turn the check engine lamp on because of the P0720 problem.  The P0720 code os for an output speed sensor circuit malfunction in the transmission.
 
Bottom line, get the trans looked at.

  

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