TRANSMISSION FLUID LEAKING

Possible causes - Low transmission fluid level - Dirty transmission fluid - Faulty shift solenoid 'D' valve - Shift solenoid 'D' valve harness or connectors - Shift solenoid 'D' valve circuit is open or shorted
When the a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced

possible cause is the torque converter clutch servo/solenoid
changing on the indicator but no drive through the gear box
run the fault codes and check for problem clutch servo/ solenoid or transmission control module
check all wiring and connections to transmission

possible causes
- low transmission fluid level
- dirty transmission fluid
- faulty line pressure solenoid valve
- line pressure solenoid valve harness is open or shorted
- line pressure solenoid valve circuit poor electrical connection

when the a transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. if the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

read more: http://engine-codes.com/p0746.html#ixzz3ptojq4bp

Hi, Try adding a bottle of oil stop leak.

P0743 - Torque Converter Clutch Circuit Electrical
Possible causes- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Low transmission fluid level
- Dirty transmission fluid
Tech notes This is an electrical problem code. Could be a problem to the harness to the TCC solenoid, the TCC solenoid connector or the TCC solenoid it self.
P0755 - Shift Solenoid B Malfunction
Possible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid B valve
- Shift solenoid B valve harness or connectors
- Shift solenoid B valve circuit is open or shorted Tech notes When the a transmission solenoid is malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

Read more: http://engine-codes.com/p0755.html#ixzz27PjeNdA5

The code probably says the solenoid is not working correctly or the signal from the solenoid is out of range.
The solenoid would need to be tested and maybe replaced.

The factory uses silicone sealer on the transmission pans and this is rarely where the leak is, unless someone has tried to replace that gasket before.Most of the time the leak is where the rubber cooler hoses connect to the transmission and the fluid runs down the case behind the solenoid pack and across the front of bell housing and looks like the pan is leaking.Reverse and low gear are controlled by the same solenoid and share a set of clutches.Low fluid is the most likely cause of poor engagement but you could have a bad solenoid pack that could be also causing the leak and or internal damage to the transmission.I would double check the fluid and have diagnostic codes pulled and the CVI (clutch volume index)and get back to me with that info and i will try to give you an isea of what is wrong.

Your scanner will give you the code but it will not tell you how to fix your vehicle. Scanners basically tell you what systems to check or what systems are failing.

These are what your codes mean:

P0700: Transmission Control Module
- Shorted or open circuit within transmission control module (TCM)
- Failure of transaxle control module. This is just a informative code.

P0734: Gear ratio error in 4th gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0732: Gear ratio error in 2nd gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0731: Gear ratio error in 1st gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0871: Transmission Fluid Pressure Sensor Switch C

P0876: Transmission Fluid Pressure Sensor Switch D

Emissions Codes:

P0400: Exhaust Gas Recirculation Flow Malfunction
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control valve stuck closed
- EGR volume control solenoid valve
- Dead (Weak) battery
- EGR temperature sensor and circuit
- EGR Valve

How to fix :
- Clean EGR Valve
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve

P0440: EVAP Emission Control System Malfunction
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0456: EVAP Control System Leak Detected (Very Small Leak)
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0441: EVAP Emission Control System Incorrect Purge
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

Based on the info check your EVAP system. I would check for leaks and maybe replace the EGR and the canister.

For the transmission check the TCM also you may need to take it to a mechanic though.

Hope this helps a little.

- Tech 101 (ASE CERTIFIED MASTER TECHNICIAN)
- Larson's Mobile Auto Repair
- 209-845-7620
- Oakdale, CA

This code is for the pressure control solenoid located in the valve body of the transmission. I recommend getting this solenoid replaced and the wiring harness leading from the outside of the transmission to the valve body inspected for signs of transmission fluid leaking into connection of harness as this will cause issues too. Ignoring this code can lead to poor trans shifting and possible engine stalls.

Make sure the breather is open and clogged with mud or some kind of debris.Good Luck!