Question about 2001 Pontiac Grand Prix

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Does anyone know what this means Transmission history P O 730

It says gear ratio is incorrect, but it is the original motor. Any suggestions?

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  • Jack Iaria
    Jack Iaria May 11, 2010

    Need more info!


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Have you changed tires and wheels to a different size? If so, that will cause a code to come up. The gear ratio is set as a value in your computer. If you change tire sizes that will cause this problem. You can have this recalibrated at your Pontiac dealer. Good luck! Phil

Posted on Jan 19, 2009

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1 Answer

I have a 2000 tiburon has loss of power an the codes are p0141 po455 po303 p0732 p0734 how do i fix please

P0141 o2 sensor heater circuit malfunction bank 1 sensor 2
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po303 misfire cylinder three
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p0734 gear 4 incorrect ratio

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Incorrect gear ratio

most likely the TR sensor that tells the TCM when to change ratios
it also could be a problem VSS that also tells the TCM when it is right to change ratios
run the fault codes

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How many sensors o2 dodge neon have

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Feb 09, 2012 | 2002 Dodge Neon

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P0735 relacion incorrecta gear 5 vw bora 2006 solucion

P0735 VOLKSWAGEN - Gear 5 Incorrect Ratio
P0735 se detecta cuando A / T no se puede desplazar a la posición 5 ª marcha incluso si el circuito eléctrico es bueno.

Notas técnicas
Empieza por inspeccionar el nivel de líquido de la transmisión y el estado, y el líquido cambia si es necesario.

Este diagnóstico monitores de la posición real del engranaje de control de la relación de deslizamiento del convertidor de par calculado por el Módulo de Control de Transmisión (TCM) de la siguiente manera:
Convertidor de par deslizamiento ratio = A x C / B

R: El eje de salida de la señal revolución de la revolución del sensor
B: Motor de la señal de velocidad del motor del módulo de control (ECM)
C: Relación de cambio fijado en la posición del engranaje que supone la medicina tradicional china

Si la posición real del engranaje es más alto que la posición (5 º) supone por TCM, la proporción de deslizamiento será más de lo normal. En caso de que la relación es superior al valor especificado, los jueces TCM este mal funcionamiento diagnóstico.

Los síntomas:
- A la luz del motor (o motor del servicio pronto luz de advertencia)
- Cambios de la transmisión incorrecta

Posibles causas:
- La transmisión de bajo nivel de líquido
- Dirty líquido de la transmisión
- Turno de solenoides
- Problemas de transmisión mecánica
- Transmisión del circuito de control hidráulico

Espero que esto le ayude. Por si acaso, adjunto el detalle en ingles original.


P0735 is detected when A/T cannot be shifted to the 5th gear position even if electrical circuit is good.

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

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 (5th) supposed by TCM, the slip ratio will be more than normal. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction.

- 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

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I found a 2000 jetta with 90k original miles with a transmission problem the person said his mechanic put the scanner in and it said incorrect gear ratio he is selling it for $1900 would it be worth the...

Incorrect Gear Ratio, means the transmission is slipping, the clutches are worn out, in other words, you will need to rebuild the transmission which may cost anywhere from $1000-1800. The Kelly Blue Book is about $2800 in Fair Condition, I would pass on purchasing this vehicle unless the person is willing to fix the problem with the transmission and offer you a Warranty for the repair.

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I can tell you what the codes are but I afraid I don't have an answer as to how to fix it.
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715 - Input/Turbine Speed Sensor Circuit Malfunction
731 - Gear I Incorrect ratio
733 - Gear 3 Incorrect ratio
734 - Gear 4 Incorrect ratio

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I have a gearbox error showing on the dash and i pulled code number p0734: gear ratio error in 4th. normal accell 4th gear neutrals out and hits rev limit at 3k rpm. trans been rebuilt 3 times and valve...

The code you are reading is a bit misleading. The gear ratio is not incorrect, the slipping in 4th gear is what the computer is seeing and reading it that way.
Unless you can find a competent shop to do your rebuild, your only other option is to have the shop you are using stop rebuilding the one you have and get you another complete unit. There could be a problem with your original, such as slight porosity in the case, permitting a pressure drop which they are not seeing. (or they are repeating the same mistake each time they rebuild it!

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1 Answer

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