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Faulty code P0734

Tiny
MENA SAMOEUL
  • MEMBER
  • 2005 HYUNDAI MATRIX
  • 1.6L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 200,000 MILES
The car does not shift into forth gear, and code p0734 is set. I changed out the transmission with another one (used ) and nothing changed. I also changed the PCM with another one (used ) and nothing changed. I noticed that oxygen sensor is not working properly. My question is, can the oxygen sensor faulty or engine misfire effect on transmission shifting into forth gear only and set code p0734?
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Sunday, May 8th, 2016 AT 9:13 AM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a transmission professional check this, it may be the pulse generator on the transmission or the clutch or what is in the pictures I am sending you are going bad.
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Sunday, May 8th, 2016 AT 9:59 AM
Tiny
MENA SAMOEUL
  • MEMBER
  • 3 POSTS
Thanks for your help, I will check this pulse generator, but I have changed the transmission and same error happened, so it may be the pulse generator harness wire ?And can you tell me where I can get this program with this pictures you attached? Than you again and sorry for my English
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Wednesday, May 11th, 2016 AT 9:44 AM
Tiny
MENA SAMOEUL
  • MEMBER
  • 3 POSTS
Another code p0562 low voltage is set also
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Wednesday, May 11th, 2016 AT 9:46 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,877 POSTS
The p0562 code is for low alternator voltage output, have you checked the alternator? here is a guide

https://www.2carpros.com/articles/how-to-check-a-car-alternator

let me know what you find

Best, Ken
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Wednesday, May 11th, 2016 AT 5:57 PM

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