Hyundai Repair: PULSE SENSORS, hyundai elentra, pulse generators

Question
Thank you for the reply below...do I need to replace all three sensors? Or just one,which one? Also what is meant by pulse generator B

Thank you once again

Subject   Hyundai Codes
Question   Hello, can you please tell me what code P0722 It is a Hyundai Elentra 2000

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Answer   P0722 indicates an error in the pulse generator B (output speed sensor) signal.  Most frequently, this is caused by a faulty sensor.  I'd recommend starting with replacing the pulse generators.  

Answer
Your transmission has two pulse generators (a/c signal inducing speed sensors).  Pulse generator B is on the back of the top of the transmission and measures the output shaft speed.  Pulse generator A is on the bottom front of the transmission end cover.  You'll need to remove the left side under cover to see it.

Both pulse generators will come together, so you'll need to replace both.  I was only speaking about the pulse generators in my previous response, so I'm sorry about any ambiguity that may have caused you to think there were more than two sensors.