What does it mean when it says wrong 5th gear ratio code

 

Welcome to the forum

I assume an automatic transmission

What year and what engine size?

In general it means one of the 3 speed sensors in the transmission is showing wrong shaft speed, it could be sensor problem or mechanical problem if shaft speed is actually faster or slower than it should be.
If it was a sensor issue then there would most likely be another code with current code.

Also post the EXACT CODE number you have, 99% of Code translations into english, or any other language, are often misleading


Is the transmission shifting into all 5 gears?
Are there any other symptoms, i.e. slipping, hard shifts, slow Reverse engagement?
What does the trans fluid look like?
what does it smell like?

 

 

 

So a 4.0l engine, 2.3l and 3.0l used 5R44E

No Code Number?
Transmission codes start with P07 then 2 more digits
P0735 might be it

If trans was rebuilt recently then I would recheck fluid level, could still have some air inside.

There is no "Thats the problem" with P0735.
Computer is just reporting that when it tells transmission to shift into OverDrive(5th) it is not doing so
Ratio is the engine RPM compared to driveshaft RPM
In 4th gear the ratio is 1 to 1 so if engine is at 1,000rpm, driveshaft will be at 1,000rpm, 1 to 1 ratio
OD(5th) is .75 to 1 ratio, so if engine is at 750rpm driveshaft will be at 1,000rpm

Transmission has speed sensors inside and final sensor(on 2001 and up) is the speedometer sensor, OSS-output shaft speed sensor

So computer is expecting to read Engine RPMs as 75% of OSS(driveshaft) RPMs after it uses solenoids to shift transmission into 5th gear

Now on the 5R44E or 55E 5th gear(OD) is also used as 2nd gear, yes, lol, as funny as that sounds 2nd gear is actually 1st gear with Overdrive turned on.
So Ford changed the 4R 4-speed into the 5R just using computer software......"very clever these Americans"
And it works well, so how does your 2nd gear work?

 

2nd gear works good but my buddies scanner from Snap-on just says that fifth gear wrong ratio so you're saying that on the tail shaft speed sensor could be no good they didn't change the speed sensor in the transmission

 

No, thats not what was said
If your speedometer didn't work then maybe it could be OSS sensor
And you would also get a different code for that
P0500 Vehicle Speed Sensor Malfunction
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High
OR
P0720 Output Speed Sensor Circuit Malfunction
P0721 Output Speed Sensor Range/Performance
P0722 Output Speed Sensor No Signal
P0723 Output Speed Sensor Intermittent

What I said was "There is no "Thats the problem" with P0735 code"

Here are most, but not all, of the codes the computer can select from when it detects a problem in transmission:
P0700 Transmission Control System Malfunction
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Torque Converter/Brake Switch B Circuit Malfunction
P0704 Clutch Switch Input Circuit Malfunction
P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit Intermittent
P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
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 Malfunction
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 Speed Sensor Circuit Malfunction
P0721 Output Speed Sensor Range/Performance
P0722 Output Speed Sensor No Signal
P0723 Output Speed Sensor Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed input Circuit Malfunction
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio
P0731 Gear I 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 gear ratio
P0740 Torque Converter Clutch Circuit Malfunction
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stock On
P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid Malfunction
P0746 Pressure Control Solenoid Performance or Stuck Off
P0747 Pressure Control Solenoid Stuck On
P0748 Pressure Control Solenoid Electrical
P0749 Pressure Control Solenoid Intermittent
P0750 Shift Solenoid A Malfunction
P0751 Shift Solenoid A Performance or Stuck Off
P0752 Shift Solenoid A Stuck On
P0753 Shift Solenoid A Electrical
P0754 Shift Solenoid A Intermittent
P0755 Shift Solenoid B Malfunction
P0756 Shift Solenoid B Performance or Stock Off
P0757 Shift Solenoid B Stuck On
P0758 Shift Solenoid B Electrical
P0759 Shift Solenoid B Intermittent
P0760 Shift Solenoid C Malfunction
P0761 Shift Solenoid C Performance or Stuck Off
P0762 Shift Solenoid C Stuck On
P0763 Shift Solenoid C Electrical
P0764 Shift Solenoid C Intermittent
P0765 Shift Solenoid D Malfunction
P0766 Shift Solenoid D Performance or Stuck Off
P0767 Shift Solenoid D Stuck On
P0768 Shift Solenoid D Electrical
P0769 Shift Solenoid D Intermittent
P0770 Shift Solenoid E Malfunction
P0771 Shift Solenoid E Performance or Stuck Off
P0772 Shift Solenoid E Stuck On
P0773 Shift Solenoid E Electrical
P0774 Shift Solenoid E Intermittent
P0780 Shift Malfunction
P0781 1-2 Shift Malfunction
P0782 2-3 Shift Malfunction
P0783 3-4 Shift Malfunction
P0784 4-5 Shift Malfunction
P0785 Shift/Timing Solenoid Malfunction
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent

As you can see the computer can be pretty specific, especially if it is a wiring or electrical device issue, when it decides to set a code.

ONLY getting P0735-Gear 5 Incorrect ratio, to me, would mean a mechanical issue, blocked passage, low pressure, ect........not a wiring or electric part issue, so not a sensor or solenoid issue

Never used Snap-on code reader, it should have a setting(or sub-menu) to get exact code numbers, not just definitions, wouldn't be much good as a reader if it didn't, definitions are not all that accurate

 

thanks for the help I'll try to get somebody else to scan and see if they find a code

 

If there are no other codes then the rebuild missed something or didn't get the valve body on correctly.

You never answer the question about shifting?

Does it shift normally and does it shift into overdrive(5th)?

 

It feels like shift good and in to overdrive when i push the overdrive button it feel like it goes out