Hi i have an audi TT 2003 model i have already a dianose of it i get gear ratio 4,5,6 incorrect. and it sliep on 3to 4 gear and is not going in to 4,5,6 gear wat can the problem be ??

these are sensors in the box. TR sensor/switch--shift solenoids---transmission mechanical fault.
Check all wires and connections. replace the TR sensor /switch for both gears

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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

Hi,
For the Audi A8 code P0735 "Gear 5 Ratio incorrect" is a transmission problem and should be taken to a transmission shop that you trust. Have a good day.

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.

CODE PO732 THAT IS GEAR 2 INCORRECT RATIO.FAULT IN TRANSMISSION RANGE SENSOR.PROBLEM IN SHIFT SOLENOID OR RELATED PRESSURE SWITCH.PROBLEM IN TRANSMISSION VALVE BODY.ALSO CHECK TO MAKE SURE TRANSMISSION FLUID LEVEL IS CORRECT.

faulty input speed sensor possible. sensors are fairly cheap and easy to install. no gaurentees because normally u will have more codes then just the 3-4 ratio with a faulty sensor but u may get lucky

USUALLY WHEN ITS AN INCORRECT GEAR RATIO ITS USAULLY A INPUT SESOR AND IF THAT DOESNT FIX IT THEN TRANNY

hiya,i dnt know about the shuddering/turbulance,but a can of Aircon Cleaner and Purifier will definately helps the aircon system and the mouldy residue. Hope it solves part of your problem.

HI,IF YOU TT GOES INTO ALL THE GEARS WITHOUT CATCHING OR HOOKING,THEN I SUSPECT YOU HAVE A PROBLEM INSIDE THE GEARBOX WITH EITHER THE SYNCHRO RING OR HUB OR THE BEARING ON THE SLIDE SHAFT MIGHT BE SEIZED.ALSO CHECK IF THERE IS NO FORIEGN OBJECT STUCK AT YOUR GEAR LINKAGE CABLES ON TOP OF YOUR GEARBOX.ANDY