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Incorrect gear 4 ratio DTC P0734

When cold the gears change properly, but as soon as the engine ( assuming the transmission oil too) heats up problem starts. From gear 3 to 4 is a hassle. I need help. Diagnosis says there is gear4 incorrect ratio P0734

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Passat gear two ratio incorrect

This means that you have a problem in the shift solenoids of this electronically controlled transmission or a fault in the mechanical part of the transmission, this can be hydraulic fluid pressure loose or a defective valve body. In order to know the exact nature of the fault with 2nd gear some diagnostic testing must be done.

Posted on Feb 12, 2012

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1 Answer

What are the probable causes of DTCs P0700, P0700 PD, P0732 and P0734?


P0700 transmission control system malfunction (failure)
P0732 gear 2 incorrect ratio
P0734 gear 4 incorrect ratio

Check level and conditions of fluid

Sep 20, 2015 | 2000 Dodge Grand Caravan

1 Answer

P0734 Hyundai accent 2003


code p 0734 refers to gear 4--incorrect ratio===causes --wiring---TR sensor/ switch---shift solenoids---transmission mechanical fault
I would check the operation of the transmission ration sensor/switch first as that is the most likely place that the fault is
check engine lights are not solely for the engine but report on transmission problems as well
a transmission mechanical fault is the absolute last that you should consider because the transmission will revert to normal operations until it selects gear 4 which indicates sensor or solenoid problem

Apr 13, 2012 | 2003 Hyundai Accent

1 Answer

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

2 Answers

Code p0734 I just replaced eng. and trans. now have this code.


Engine Light ON (or Service Engine Soon Warning Light)
- Incorrect transmission shifting Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit Tech notes Start by inspecting the transmission fluid level and condition, and change fluid if necessary. When is the code detected? P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good. P0734 NISSAN Description This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:

Torque converter slip ratio = A x C/B

A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes

If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

Aug 09, 2011 | 1995 Nissan Altima

1 Answer

My came with a code po734 is that a big problem?


DTC P0734 - Improper Ratio for Fourth Gear.
P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good.

This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:

Torque converter slip ratio = A x C/B

A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes

If the actual gear position is higher than the position (4th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Incorrect transmission shifting

Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

Tech notes: Start by inspecting the transmission fluid level and condition, and change fluid if necessary.


Test and check it and send us ypur comments.

May 14, 2011 | 2000 Land Rover Discovery

2 Answers

Code po734, po735


This is what your codes mean:

Trouble Code-P0734 (A/T Additional Gear Ratio Error In Fourth Gear)


Trouble Code Conditions:
Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 4th Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed.

Possible Causes:

  • Customer may complain of intermittent 4th gear operation
  • O/D and 2/4 pressures less than 75 psi
  • O/D or 2/4 clutch volume indexes out of specification
  • O/D accumulator seals are damaged
  • Transmission enters "limp in" mode running in 4th gear

Trouble Code-P0735 (A/T Gear Ratio Error Fourth Prime)

Trouble Code Conditions:
Vehicle driven any forward Gear, and the TCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio (this test can take up to 5 minutes).

Possible Causes:

  • Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent)
  • Transmission has internal problems or damage present
You have a transmission problem.

Jan 17, 2011 | 2003 Dodge Durango

1 Answer

I am getting the following trouble codes from my 2000 Dodge Durango SLT: P1732 P1734 P0731 P0734 What do these point to?


They all point to your Transmission Governor and Gears. You will need to take your vechile to a Transmission Shop to diagnose the problem

  • P0731 Gear I Incorrect ratio
  • P0734 Gear 4 Incorrect ratio
  • Aug 10, 2010 | 2000 Dodge Durango

    1 Answer

    Transmission Problem - Ford Escape 2006


    P0732 and P0734 indicates gear ratio errors in 2nd and 4th gears, basically no 2nd and 4th gear. The one thing 2nd and 4th gear has in common is the band, the band is known to break, this is a common failure with this transmission and happens on a regular basis.

    You need to remove the transmission to repair it.

    Jan 25, 2010 | 2006 Ford Escape

    1 Answer

    2001 Jeep Grand Cherokee won't shift out of first gear and the fault codes are P0733 and P0734.


    P0733=Gear 3 Incorrect Ratio
    P0734=Gear 4 Incorrect Ratio,
    your transmission is in "limp" mode,
    Have the following sensors checked on the transmission,input sensor,output sensor,and speed sensor.
    The transmission is not getting a signal from one of them,So it doesn't know how fast your going so it doesn't up shift.

    Jan 22, 2010 | 2002 Jeep Grand Cherokee

    1 Answer

    P0734 (Gear 4 incorrect ratio) 96' Mazada 626 automatic


    More likely is transmission problem it could cost up tp $2000.00

    May 10, 2017 | 1996 Mazda 626

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