Range rover sport I used 12quarts for the transmission but no good result. Apart from oil will something else cause incorrect reverse ratio and inchanging of gear?

Codes P0733 and P0736 on a 2002 Jeep Liberty refer to transmission-related issues. Here's what each code indicates: P0733 - Gear 3 Incorrect Ratio: This code indicates that the transmission is not shifting into the third gear correctly. It suggests a problem with the gear ratio between the input and output shafts of the transmission when the third gear is engaged. This could be caused by issues such as a faulty transmission solenoid, a worn or damaged gear, low transmission fluid level, or internal transmission problems. P0736 - Reverse Incorrect Ratio: This code indicates that the transmission is not shifting into the reverse gear correctly. It suggests a problem with the gear ratio between the input and output shafts of the transmission when the reverse gear is engaged. Possible causes could include a faulty transmission solenoid, a damaged or worn reverse gear, low transmission fluid level, or internal transmission issues.

https://www.rangerovers.net/forum/6-range-rover-mark-iii-l322/239242-2009-hse-range-rover-transmission-fault-p0730.html
https://www.rangerovers.net/forum/9-range-rover-sport-l320/267530-transmission-service-p0735.html
https://www.rangerovers.net/forum/9-range-rover-sport-l320/48932-range-rover-sport-2012-transmission-issue.html
https://www.yourmechanic.com/article/p0746-obd-ii-trouble-code-pressure-control-solenoid-performance-or-stuck-off-by-valerie-johnston

P0736 is reverse incorrect gear ratio
U0167 is Lost communication with vehicle immobilizer control module

Both error codes you have are transmission related. P0736 is an error for reverse has wrong gear ratio. P0700 is a general transmission problem code
http://www.obd-codes.com/p0700
http://www.obd-codes.com/p0736
for more information.

try changing the transmission control module as it is the unit that reports incorrect ratios and other transmission faults.

P0700 Transmission Control System

P0701 Transmission Control System Range/Performance

P0702 Transmission Control System -Electrical

P0703 Torque Converter/Brake Switch B Circuit

P0704 Clutch Pedal Position Switch -Circuit Malfunction

P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)

P0706 Transmission Range Sensor/Switch Circuit Range/Performance

P0707 Transmission Range Sensor/Switch Circuit Low Input

P0708 Transmission Range Sensor/Switch Circuit High Input

P0709 Transmission Range Sensor/Switch Circuit intermittent

P0710 Transmission Fluid Temperature Sensor Circuit

P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance

P0712 Transmission Fluid Temperature Sensor Circuit Low Input

P0713 Transmission Fluid Temperature Sensor Circuit High Input

P0714 Transmission Fluid Temperature Sensor Circuit Intermittent

P0715 Input/Turbine Speed Sensor Circuit

P0716 input/Turbine Speed Sensor Circuit Range/Performance

P0717 Input/Turbine Speed Sensor Circuit No Signal

P0718 Input/Turbine Speed Sensor Circuit Intermittent

P0719 Torque Converter/Brake Switch B Circuit Low

P0720 Output Shaft Speed Sensor Circuit

P0721 Output Shaft Speed Sensor Circuit Range/Performance

P0722 Output Shaft Speed Sensor Circuit No Signal

P0723 Output Shaft Speed Sensor Circuit Intermittent

P0724 Torque Converter/Brake Switch B Circuit High

P0725 Engine RPM Input Circuit

P0726 Engine RPM Input Circuit Range/Performance

P0727 Engine RPM Input Circuit No Signal

P0728 Engine RPM Input Circuit Intermittent

P0729 Gear 6 Incorrect Ratio

P0730 Incorrect Gear Ratio

P0731 Gear 1 Incorrect Ratio

P0732 Gear 2 Incorrect Ratio

P0733 Gear 3 Incorrect Ratio

P0734 Gear 4 Incorrect Ratio

P0735 Gear 5 Incorrect Ratio

P0736 Reverse Incorrect Ratio

P0737 TCM Engine Speed Output Circuit

P0738 TCM Engine Speed Output Circuit Low

P0739 TCM Engine Speed Output Circuit High

P0740 Torque Converter Clutch Solenoid Circuit

P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off

P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please

Hi.

Technically speaking a gear ratio is the rapport between the angular velocity (rotating speed) of the engine shaft and the angular velocity of the transmission output shaft.
The reverse ration is the ratio of the reverse gear. Your codes are pointing at a problem with the electronic transmission, probably a defective pressure switch inside transmission resulting in wrong reverse gear ratio. Please see my troubleshooting in this similar case where a defective pressure switch led to incorrect first gear ratio (I know your code is with reverse).

Regards.

Ginko

Replace your spark plugs and spark wires.
Check you tire alignment and engine oil levels and replace your fuel filter.
Check your transmission fluid and coolant levels and brake fluid levels.
Cabin air filter replacement is also recommended.
Check your battery output voltage and see if an recharging is required.

Hi! You may have a faulty ECU (engine control unit). The ECU controls the air and fuel ratio, if its faulty it can really emits black smoke. Hope this helps and good luck!

I have referred your problem to Graeme Cooper automotive and should get advice within a day or so. However, I had exactly the same problem on another vehicle, also changed the filter and oil. It worked for a while then failed completely.

First, check under the vehicle for any leaking hose that could be causing a pressure drop. Failing that, the bad new is that you probably have a dud torque converter and/or bad clutch packs and it will be an expensive job