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08 hyundai code p0734 is the only fix tranny replace

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Most P0734 codes are due to misshifts in the auto tranny. Most often due to a faulty PCM, ECM, TCM or internal blockage, 4th gear is not engaging correctly

Posted on May 10, 2017

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Posted on Jan 02, 2017

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P0734 hyundai


Why did he or she say this?? Did he or she do the diagnostics for the fault codes or did they just guess??

Mar 22, 2014 | Hyundai Motor 2004 Accent

1 Answer

I own a 2000 Hyundai accent the codes came up with P0717, P0734, P0732,P0108. Please help


Sorry to tell you that it is incorrect gear ratio codes. Must replace the transmission.

Mar 14, 2013 | 2001 Hyundai Accent

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My 2000 hyundai elantra is automatic it has a code p0734. which the mechanic explained me that i have to get the speen sensor replace and get new clutch because the 4 gear ratio is bad. pls advice what 2...


P0734=A/T 4th gear incorrect ratio. This has nothing to do with the speed sensor. If the speed sensor was faulty, it would also set OTHER gear incorrect ratio codes. My experience tells me the 4th gear incorrect ration indicates the torque converter clutch (TCC) is slipping and nothing more. Unless there was a speed sensor DTC (Diagnostic Trouble Code), the sensor is not the issue (yet). The fact P0734 was set (trust the computer), the TCC is slipping (out of range). Question: Maintenance history may indicate the wrong transmission fluid may have been introduced. Hyundai's Transmission fluid is strictly SPIII... there is no substitute. The incorrect fluid will cause 4th gear slippage. Now, having said that, it doesn't mean the 4th gear (lock-up) clutch isn't worn out. Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

Sep 08, 2011 | 2000 Hyundai Elantra

4 Answers

I have had the transmission rebuilt in my 2002 Hyundai Accent GL only 8 weeks ago and I have gotten the codes P0734 and P1529 now. So does that mean my mechanic did not do his job?


Code 0734 : Gear 4 Incorrect Ratio. you may wanna take back to the Mechanic and tell him whats going on and let him deal with that. Good luck

Dec 12, 2010 | 2002 Hyundai Accent

2 Answers

Getting Error codes P0732, P0734, P1529 Tachometer is stable and car is running fine but the speedometer intermittantly drops from 75mph to 30 mph after the car has been driven for 30 to 40 minuntes on the...


Sounds like a dirty of faulty speed sensor. They can be removed and cleaned. Better off replacing. Do check the wires to the speed sensor. Trace wires from tranny to instrument cluster and make sure they are all in tact and clean.

May 14, 2010 | 2003 Kia Spectra

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2002 hyundai accent.transmission works great if you leave it in second gear.if leaving the selector in drive the transmission will start out in second and never shift to overdrive.when coming to a stop in...


Hi

Well two of the tranny codes ; P0734 and PO732 indicate gear 2,3,4 ratio incorrect. This can be caused by poor readings at the input and output speed sensors or pulse generators. The P1709 code is in reference to the kickdown servo switch.

Replacing the pulse generator set and TCM reprogramming( as per TSB) may solve your problem, otherwise you have a major component failure in the transmission unit. I would get some line pressures at the transmission checked first.

Sounds like the transmission is in fail safe mode, this happens when there is a transmission fault, you only have two gears 2nd and reverse.

Hope this helps - Steve

Feb 20, 2010 | Hyundai Accent Cars & Trucks

2 Answers

Vehicle wont change up into gear reverse gear not


P0734 - 4th gear incorrect ratio. P1529 Malfunction Indicator Lamp Request. Problem is in the transmission.
Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.

Sep 27, 2009 | 2002 Hyundai Accent

1 Answer

Tranny does not shift out of O/D and starting out in 2nd gear.


Same situation, Solenoids in the Transmission were throwing the codes, Lost O/D and had transmission replaced. No signs of problems after check engine light came on for close to 1000 miles later.

Aug 21, 2009 | 2000 Hyundai Elantra

1 Answer

First problem P0734, then some internal failure, now 3rd tranny


Take it back to the dealer and have them test the TPS. The PCM takes information from the TPS to control the transmission fluid pressure that controls the firmness of the shifts and the amount of fluid pressure to hole the gears in place. The reading from the TPS should be smooth and constant. it the TPS passed then it's a good chance that your looking at another transmission. P0734 mean's the 4th gears are slipping. Good luck and hope this helps. Keep me posted, be glad to help.

Jun 16, 2009 | 2002 Hyundai Accent

2 Answers

2002 hyundai accent codes p1529 and p0734


P1529 means nothing more than the TCM (transmission control module) has requested that the ECM (engine control module) turn on the check engine lamp.
P0734 basically indicates that your transmission is slipping.
You need to take this car to an authorized repair center for hyundai cars. Replacing the filter and fluid on the transmission might save this transmission but I would be willing to bet that a total transmission rebuild is in order.

Good Luck

Jan 02, 2009 | 2002 Hyundai Accent

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