Honda V6 Oil Pressure Switch Replacement (Code P3400)

# Honda V6 VCM Oil Pressure Switch Replacement (Code P3400)

Honda V6 Engine J35A7, with VCM (Variable Cylinder Management)
shown in the 2010 Odyssey Ex-L

## Reason

* Check engine light P3400
* Valve Pause System (VPS) stuck in off position - bank 1

## Supplies

1. Honda Oil Pressure Switch, part#: 37240-R70-A04
2. O-ring, part#: 91319-PAA-A01

## Tools

1. Ratchet socket/box wrench
2. 24 mm deep socket
3. Torque wrench (set at 13 ft pounds)
4. Pick

## Preparation

1. Pop the hood
2. Remove the engine cover

## Oil Pressure Switch Removal

1. Find the bank 1 (in the back, to the firewall) oil pressure switch
2. Remove connector to the oil pressure switch
3. Use a 24mm deep socket to remove switch
4. Use a pick to remove the existing gasket, possibly stuck on the engine
5. Clean the surface

## Oil Pressure Switch Replacement

1. Lubricate the new o-ring with engine oil.
2. Put the new o-ring back on the engine contact.
3. Thread the oil pressure switch on, and make sure the o-ring is in place.
4. Torque the switch to 13 ft lb or snug.

## Check

1. Start engine and check leaks
2. Clear code and test drive

## Additional comments

Some service manuals (on older models) suggest the use of liquid gasket on the thread.
However, I don't see anything on the factory switch thread and skip this step.

It is working fine and so far no leak on the Odyssey.

--
Be safe, stay dirty.

Enjoy the work!

God bless!