Honda Odyssey BYKA Clutch Piston Seal Failure - Transmission Digest

Honda Odyssey BYKA Clutch Piston Seal Failure


A 2012 Honda Odyssey equipped with the BYKA six-speed transmission has complaints of erratic shifts. The transmission had an intermittent and inconsistent 2-3 shift. Sometimes it would have a slight 2-3 flare and bump, and sometimes it would have a more serious flare and a large bump. On other occasions, it shifted into third, then neutral and back to third. In addition, a P0776 code was stored for “Clutch Pressure Control Solenoid B Stuck Off”.

Figure 6

A solenoid pack was replaced but the complaint remained. The solenoid pack was removed so the clutch feed ports could be exposed and the third clutch was air checked, refer to figure 6. The air check had poor results due to a leak in the third clutch drum, the location of which can be seen in figure 7.

Figure 7


The third clutch outer piston seal had failed. The type of failure is referred to as a “spiral failure” as seen in figure 8.

Figure 8


Replace the piston seal.


This type of failure is typically seen on long-stroke hydraulic piston seals when some segments of the O-ring slide while other segments simultaneously roll. This can happen with eccentric components, wide clearance combined with side loads, uneven surface finishes, inadequate lubrication, O-ring material is too soft or stroke speeds are too slow. There were no visible signs seen that would point to the cause.

It would be interesting to see if this vehicle comes back with the same failure. Based on the failure explanation above it would seem that the drum would be at fault.

You May Also Like

Dealing with PCM fault codes on the Ford 5R110W

The complaint A 2005 Ford F350 with the 6.0 liter diesel engine and 5R110W transmission has set a P0753 “Pressure Control Solenoid A – Electrical Fault” code and a P2700 “Transmission Friction Element A – Apply Time Out Of Range” code. After a prolonged drive time, DTC P0752 “Pressure Control Solenoid A – Stuck On”


The complaint

A 2005 Ford F350 with the 6.0 liter diesel engine and 5R110W transmission has set a P0753 “Pressure Control Solenoid A - Electrical Fault” code and a P2700 “Transmission Friction Element A - Apply Time Out Of Range” code. After a prolonged drive time, DTC P0752 “Pressure Control Solenoid A - Stuck On” and P0973 “Pressure Control Solenoid A - Circuit Low” also set.

Ford FNR5 slipping or no reverse hot

The complaint A Ford vehicle equipped with the FNR5 transmission has a complaint of a severe slipping condition in reverse. As the transmission approaches normal operating temperature, reverse movement is non-existent. Related Articles – Diagnosing AS68RC intermittent pressure switch/linear solenoid performance codes – Another needle in a haystack: Locating wiring problems – Shift Pointers: A

FCA 62TE missing caged needle bearing

The complaint When the Low Clutch Housing is removed from the Underdrive Center Shaft of a 62TE transmission, one notices that the caged needle bearing located on the shaft between the sealing rings was missing (Figure 1, above).  Related Articles – Chrysler ZF8 generations 1 and 2 identification guide – When a transmission problem isn’t

FCA 62TE slipping in second and fifth

The complaint Immediately after overhaul, a 2013 Chrysler Town and Country with a 3.6L engine and a 62TE transmission faults to limp mode. The scan tool reveals trouble codes P0732 “Second Gear Ratio Error,” P0735 “Fifth Gear Ratio Error,” P0792 “Compounder Speed Error,” and P1790 “Fault After Shift” are set. During the overhaul procedure, the

Comparing the pumps on Ford 6F35 generation 1 and 2

The change For the 2013 model year, the Ford 6F35 transmission received a high-volume pump which increased the intake channel in the stator shaft support from 0.432” to 0.520”. The pump body intake channel was also increased to the same matching dimensions. Related Articles – Shift Pointers: No ball, no reverse – The multi-functional Clutch

Other Posts

How to service the Honda 10-speed transmission

With Honda’s 10-speed front wheel drive transmission (see Figure 1, above) going into its fifth year on the roads, it’s feasible that one may show up in your shop for service. Related Articles – A long journey to success at New Jersey’s Wholesale Transmissions – A mysterious shudder: Locating a problem with no fault codes

The Nightmare on Oak Street: A hunt for 4L30E electrical problems

This story begins with a 4WD 1998 Honda Passport equipped with a 3.2 V6 engine and 4L30E transmission. The shift indicator in the cluster was not functioning correctly and transmission was shifting hard. The shift indicator showed ‘P’ in Park, and ‘1’ in D3, D2, or D1. The indicator didn’t light up in any other

Alto introduces transmission filter for Honda, Acura 6-speeds

Alto has introduced a new transmission filter for Honda and Acura six-speed transmissions. The internal transmission filter (part no. 146944A) with 27mm pickup covers the following transmissions: MT4A, ARP6, M7PA and PV2A. Related Articles – Alto introduces new front pump cover for Chrysler RFE models – Sonnax releases splined stub and sleeve kits for performance

Raybestos introduces new Honda, Acura filters

Raybestos has introduced a series of new filters for a variety of Honda/Acura applications. The new filters are available from Raybestos now. The line includes the following: Related Articles – GFX announces low-pressure drop oil cooler – TransTec introduces stator sleeve tool kit – GFX introduces filter for Honda CVTs B5RA, B5SA inline filter 2011-2015