Need easy way to take off transmission fluid cap.Trying to check fluid.

Checking the Transmission Fluid

• It is important to check the fluid level only after the fluid has circulated throughout the transmission by shifting through the gears. Failing to allow the fluid to circulate will result in a false fluid level reading. Turn the engine on and shift through each of the transmission's gears with the brake pedal depressed and the parking brake applied. The car should be allowed to idle in each gear position for approximately five seconds. Turn the engine off, then climb underneath the passenger's side of the vehicle. A small plug is located on the passenger's side of the transmission. Remove this plug with a wrench. Turn the engine on and observe whether any fluid drips out of the transmission plug's opening. If fluid does begin to drip from the plug opening, the transmission does not require additional fluid. Turn the engine off and install the transmission plug.
  

Adding Transmission Fluid

• If fluid did not begin to drip out of the transmission's plug, transmission fluid must be added. Turn the engine off, then remove the black breather cap from the top of the transmission. The circular breather cap twists into the transmission. Twist the cap in a counterclockwise direction until it detaches from the transmission. Because of the lack of clearance between the breather cap's opening and the bottom of the vehicle, transmission fluid cannot be poured into the breather cap opening. Attach a fluid pump to a quart-sized container of new transmission fluid. Insert the pump's hose into the transmission through the breather cap's opening. Turn the engine on, then actuate the pump until fluid just begins to drip out of the plug's opening on the side of the transmission. Screw the breather cap onto the top of the transmission, then install the plug with a wrench.
  

The transmission is probably WAY overfilled. If you are trying to "check" or "top-off" the fluid level by removing the FILL/VENT CAP and looking in, then that is most likely the case.

The fluid is checked on that transmission by placing the vehicle on a hoist and removing the CHECK PLUG with the engine running. The fluid should just barely dribble out from the check plug when it is checked. Please note from the diagram below, that the check plug is UNDER the vehicle iand is WAY below the FILL/VENT CAP.

• If this is a manual transmission you will have to get underneath the car and on the transmission you will see two big plugs. This check is performed with the vehicle off.

1. 17mm or 18mm.
2. Top plug is the fill plug and the Bottom plug is the drain.
3. You will need a funnel with a hose attached to it.
4. Pull the top plug out and fill until the fluid just barely comes out and that is the proper fill.
5. Plug the hole with the fill plug. Job complete.

• If it's a manual it will have a dip stick or it may have a cap on top of the transmission that is commonly referred to as a "sealed transmission."

1. Put the emergency brake on.
2. Put the car in neutral.
3. The check for this is a 10mm plug on the transmission. Again this has to be accessed under the car.
4. Pull that little plug and if fluid comes out then it is full.
5. If nothing comes out then add fluid where you removed the cap until it comes out and plug the transmission.
6. Replace transmission refill cap.
7. Job complete.

Regards, Tony

TRANSMISSION DONT HAVE DIP STICK,YOU HAVE A CHECK PLUG LOCATED UNDER TRANSMISSION NEAR THE PAN ADJACENT TO THE ENGINE OIL DRAIN PLUG.CHECK PLUG IS A METRIC 11M OR 12M METRIC BOLT.TO CHECK FLUID CAR HAS TO BE LEVEL AND ENGINE RUNNING.WHEN YOU REMOVE CHECK PLUG, IF FLUID POUR OUT YOU HAVE TOO MUCH TRANSMISSION FLUID IN TRANSMISSION, IF FLUID SLOW DRIP YOU HAVE ENOUGH FLUID IN TRANSMISSION, IF NO FLUID DONT DRIP OUT WHEN CHECK PLUG REMOVED,ADD A PINT OF TRANSMISSION FLUID AT A TIME.YOU POUR FLUID AT TOP OF TRANSMISSION UNDER THE HOOD,YOU WILL SEE A RED VENT FILL CAP, REMOVE CAP, YOU NEED A VERY LONG FUNNEL TO POUR TRANSMISSION FLUID IN THE TRANSMISSION. IF YOU HAVE TRANSMISSION SHIFTING OR SLIPPING PROBLEMS,MOST TIME TRANSMISSION DUE FOR FILTER AND FLUID CHANGE IF YOU AT THE 60000 MILES TO 120000 MILES TIME FOR FLUID AND FILTER CHANGE.

checking the transmission fluid of the honda passport is not an easy job. the cap is located at top of the transmission, determining the fluid level is by feel.

To check the transmission fluid level in your car you have to raise the vehicle up and take out the transmission fluid check plug in the transmission. It is locate just below and forward (Towards the front of the car) of where the right axle goes into the transmission housing. To fill it take the plug out then remove the red cap located on the upper side of the transmission housing. You will need a long funnel to add the fluid. Add fluid until it can be seen dripping out of the check plug under the car. Then replace the cap and reinstall the plug. (There is no dipstick on your car)

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

TRANSMISSION DONT HAVE A DIP STICK.IT HAS A RED FILLER CAP INSTEAD.TO CHECK TRANSMISSION FLUID THE CAR HAS TO PUT ON A LIFT LEVEL.TRANSMISSION HAS A CHECK PLUG.ITS UNDER THE EXTENSION HOUSING.THE OIL PAN DRAIN PLUG IS BELOW IT.YOU NEED A DRAIN PAN AND THE CAR NEED TO BE RUNNING AT OPERATING TEMPERATURE.WITH ENGINE RUNNING YOU REMOVE THE CHECK PLUG.IF NO FLUID DIPS OUT YOU NEED TO ADD SOME FLUID.IT FLUID POURS OUT YOU HAVE TOO MUCH TRANSMISSION FLUID IN SYSTEM.IF YOU GET A SLOW DRIP YOU HAVE THE CORRECT AMOUNT OF FLUID IN TRANSMISSION.THE CAR HAS TO BE LEVEL AND YOU PUT FLUID IN THE TOP OF TRANSMISSION WHERE THE RED VENT FILL CAP IS.YOU NEED A LONG LONG FUNNEL TO PUT FLUID IN WITH OUT SPILLING FLUID ALL OVER THE PLACE.

Draining the system is easy,,It can be messy,, loosen the transmission oil pan bolts slowly allowing the pan to drop down fluid will spill out ..Checking the trans fluid , The transmission and fluid must be at 80 degrees celcius..and the car raised level and remove the 10 mm threaded plug at the passenger side of the trans on the tailstock end and if fluid comes out then its at the proper level..add fluid at the red cap located on top of the trans..at the drivers side....good luck

Wow! People giving bad advice!

Ok, This trans doen't have a dipstick. The fill cap IS the red cap at the top of the trans. But to check oil level, a pipe plug needs to be removed from the trans case - under the passenger axle. Vehicle must be running in park and level. When the oil runs out of the hole it is full. If not add until it does.

Just be sure it is level and running.

A pain in the *** YES it is