IllustrationOUR 2007 HONDA ODYSSEY EXPERIENCED REAR BRAKE FAILURE AT 2,700 MILES DUE TO RUST BUILD-UP ON THE ROTORS. THEY WERE REPLACED BY THE DEALER. THE REAR ROTORS AGAIN FAILED AT 17,820 MILES AND HAD TO BE RESURFACED. WE ARE CONCERNED ABOUT THE BRAKING SYSTEM AND THE POTENTIAL FOR CONTINUED FAILURE CREATING AN UNSAFE CONDITION. *TR
2007 Honda Odyssey
Owner reports · Recalls · Investigations
More warning signs than most Odyssey years
Owner complaints for the 2007 Honda Odyssey are substantially higher than the model-year median of 249.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Odyssey years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
1490–25K
15625–50K
12650–75K
7675–100K
105100–150K
60150K+
672 reports with mileage · 158 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 139 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 134 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Steering. Review the 109 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
38 crash reports15 fire reports48 injury reports
Service Brakes, Hydraulic complaints
139 reportsTHE CAR WILL NOT STOP UNLESS THE DRIVER EXERT A LOT OF PRESSURE ON THE BRAKE PEDAL. THE CAR WAS BROUGHT INTO THE DEALERSHIP ON MULTIPLE OCCASIONS. THE DEALERSHIP CHANGED THE MASTER CYLINDER AND STATED THAT IS THE CHARACTERISTIC OF THE CAR FOR THE REMAINING VISITS. HONDA POSTED A FIX ON JANUARY 14, 2009 ON SERVICE BULLETIN 07-045…
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THE CAR WILL NOT STOP UNLESS THE DRIVER EXERT A LOT OF PRESSURE ON THE BRAKE PEDAL. THE CAR WAS BROUGHT INTO THE DEALERSHIP ON MULTIPLE OCCASIONS. THE DEALERSHIP CHANGED THE MASTER CYLINDER AND STATED THAT IS THE CHARACTERISTIC OF THE CAR FOR THE REMAINING VISITS. HONDA POSTED A FIX ON JANUARY 14, 2009 ON SERVICE BULLETIN 07-045. THE FIX SHOULD BE A RECALL BECAUSE IT REDUCES THE STOPPING DISTANCE OF THE VEHICLE. *TR
I WAS EXITING THE FREEWAY AND BEGAN STOPPING AS I APPROACHED AN ALREADY STOPPED VEHICLE. I BEGAN MY STOP EARLY TO MAKE SURE I HAD ENOUGH SPACE TO STOP. THE BRAKE PEDAL ON THIS VEHICLE HAS ALWAYS FELT SOFT/SPONGY. I DEPRESSED THE BRAKE PEDAL AND THE MINI VAN SLOWED DOWN BUT THE PEDAL CONTINUED TO GO TO THE FLOOR. THE MINI VAN…
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I WAS EXITING THE FREEWAY AND BEGAN STOPPING AS I APPROACHED AN ALREADY STOPPED VEHICLE. I BEGAN MY STOP EARLY TO MAKE SURE I HAD ENOUGH SPACE TO STOP. THE BRAKE PEDAL ON THIS VEHICLE HAS ALWAYS FELT SOFT/SPONGY. I DEPRESSED THE BRAKE PEDAL AND THE MINI VAN SLOWED DOWN BUT THE PEDAL CONTINUED TO GO TO THE FLOOR. THE MINI VAN HAS ABS AND SO I CONTINUED TO PRESS HARDER. THE PEDAL WAS ALL THE WAY TO THE FLOOR AND THE CAR WAS ROLLING AS IF THE PEDAL WAS LIGHTLY DEPRESSED. THEN THE MINI VAN ROLLED AS IF THE BRAKES WERE NOT ON AT ALL. I HAD TO RELEASE THE PEDAL AND DEPRESS IT AGAIN. AT THIS TIME I HAD TO STEER THE MINI VAN TO THE LEFT SIDE OF THE CAR THAT WAS IN FRONT OF ME TO AVOID HITTING IT. AFTER THAT EVENT I WAS ABLE TO DRIVE THE CAR HOME AND TO THE DEALER. AFTER TELLING MY WIFE ABOUT THE EVENT SHE SAID THAT SHE THOUGHT IT HAD HAPPENED TO HER BEFORE. THE DEALER CHECKED THE BRAKE SYSTEM AND SAID THEY COULD NOT FIND ANYTHING. THEY CALLED HONDA AND HONDA HAD THEM REPLACE THE ABS MODULATOR AND BLEED THE SYSTEM. THIS WAS A VERY SCARY INCIDENT AND I COULD ONLY HOPE THE PROBLEM HAS BEEN FIXED. I DO FEAR FOR OTHERS WITH THIS VEHICLE BECAUSE IT IS A FAMILY VEHICLE AND AFTER AN INTERNET SEARCH THIS PROBLEM DOES SEEM TO HAPPEN OFTEN. *TR
JANUARY 5TH, 2009 I WAS INVOLVED IN AN ACCIDENT THAT I BELIEVE WAS DIRECTLY LINKED TO THE BRAKE ISSUE WITH MY 2007 HONDA ODYSSEY. I HAVE PREVIOUSLY REPORTED THE "SOFT AND MUSHY" BRAKES TO THIS SITE AND TO THE LOCAL HONDA DEALER MULTIPLE TIMES. ON THE EVENING OF THE ACCIDENT, I SHOULD HAVE HAD PLENTY OF TIME TO STOP AFTER THE P…
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JANUARY 5TH, 2009 I WAS INVOLVED IN AN ACCIDENT THAT I BELIEVE WAS DIRECTLY LINKED TO THE BRAKE ISSUE WITH MY 2007 HONDA ODYSSEY. I HAVE PREVIOUSLY REPORTED THE "SOFT AND MUSHY" BRAKES TO THIS SITE AND TO THE LOCAL HONDA DEALER MULTIPLE TIMES. ON THE EVENING OF THE ACCIDENT, I SHOULD HAVE HAD PLENTY OF TIME TO STOP AFTER THE PANIC STOP OF A CAR IN FRONT OF ME, DUE TO ANOTHER TURNING DRIVER. HOWEVER, THE BRAKES WENT TO THE FLOOR AND DID NOT STOP THE VAN IN TIME. THIS CAUSED AN ACCIDENT WHERE I REAR-ENDED THE DRIVER IN FRONT OF ME CAUSING MAJOR DAMAGE TO HER CAR AND MINE WITH MY AIRBAG DEPLOYING. THE ISSUE WITH THE BRAKES HAS BEEN ONE THAT I HAVE COMPLAINED ABOUT TO MULTIPLE HONDA DEALERS AND THEY HAVE IGNORED, ALWAYS SAYING THAT THEY WERE WITHIN NORMAL LIMITS. I HAVE DRIVEN VANS FOR 17 YEARS AND HAVE NEVER HAD THE BRAKING PROBLEMS WITH ANY OTHERS. THERE WAS NO REASON FOR THIS ACCIDENT TO HAPPEN OTHER THAN SOFT AND WEAK BRAKES THAT INTERMITTENTLY DO NOT STOP THE VEHICLE. WE ARE CONTACTING THE HONDA BODY SHOP THAT HAS THE VAN AND MAKING SURE THEY ARE DOING A COMPLETE INSPECTION ON THE BRAKING SYSTEM AGAIN. PLEASE DO SOMETHING ABOUT THIS ISSUE BEFORE MORE PEOPLE ARE HURT OR KILLED. *TR
THIS IS TO PROMPT AN INVESTIGATE OF 2007 HONDA ODYSSEY BRAKE PROBLEM. I HAVE HAD TO BRING OUR 2007 HONDA ODYSSEY BACK TO THE DEAL FOR REPAIR BECAUSE OF BRAKE PEDAL IS VERY VERY SOFT. MY ODYSSEY HAS 6000 MILES ON THIS ONLY AND I BRING IT BACK THREE TIMES ALREADY. I TRULY FEEL THE BRAKING SYSTEM IS NOT SAFE EVEN AFTER THE THIRD TI…
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THIS IS TO PROMPT AN INVESTIGATE OF 2007 HONDA ODYSSEY BRAKE PROBLEM. I HAVE HAD TO BRING OUR 2007 HONDA ODYSSEY BACK TO THE DEAL FOR REPAIR BECAUSE OF BRAKE PEDAL IS VERY VERY SOFT. MY ODYSSEY HAS 6000 MILES ON THIS ONLY AND I BRING IT BACK THREE TIMES ALREADY. I TRULY FEEL THE BRAKING SYSTEM IS NOT SAFE EVEN AFTER THE THIRD TIME. THE DEAL DID REPLACE SOME MODUALS ON THE ANTI LOCKING SYSTEM. BUT THE ODYSSEY BRAKE STILL NOT VERY FIRM AND I AM AFRAID THAT IT WILL NOT STOP IN TIME. *TR
WHILE PULLING INTO A PARKING SPOT WITH A VERY SLIGHT DOWNHILL GRADE I APPLIED THE BRAKES, WHICH SEEMED TO HAVE LITTLE EFFECT ON STOPPING THE VEHICLE COMPLETELY. I PUSHED VERY HARD ONTO THE BRAKE PEDAL AND WAS ABLE TO GET THE VEHICLE STOPPED BEFORE HITTING THE SUV PARKED IN FRONT OF ME. ONLY THEN DID I HEAR THAT THE MOTOR WAS RE…
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WHILE PULLING INTO A PARKING SPOT WITH A VERY SLIGHT DOWNHILL GRADE I APPLIED THE BRAKES, WHICH SEEMED TO HAVE LITTLE EFFECT ON STOPPING THE VEHICLE COMPLETELY. I PUSHED VERY HARD ONTO THE BRAKE PEDAL AND WAS ABLE TO GET THE VEHICLE STOPPED BEFORE HITTING THE SUV PARKED IN FRONT OF ME. ONLY THEN DID I HEAR THAT THE MOTOR WAS REVVED UP. UPON RELEASING THE BRAKES THE MOTOR RETURNED BACK TO IDLE. I, AT THAT POINT, REALIZED THAT I WAS INADVERTENTLY PUSHING ON THE ACCELERATOR WHILE APPLYING THE BRAKES, WITH THE SAME FOOT SIMULTANEOUSLY (RIGHT FOOT). I HAVE BEEN DRIVING FOR 29 YEARS AND HAVE NEVER HAD THIS HAPPEN BEFORE. UPON DOING MY OWN INVESTIGATING, I REALIZED THAT WITH THE PROXIMITY OF THE BRAKE PEDAL TO THE ACCELERATOR IT WAS POSSIBLE TO BRIDGE THE DISTANCE AND APPLY BOTH AT THE SAME TIME. MORE IMPORTANTLY, I DISCOVERED THAT THE BRAKE PEDAL TRAVEL EASILY ALLOWED THE BRAKE PEDAL TO PASS THE ACCELERATOR IDLE POSITION, ESPECIALLY WHEN APPLYING THE BRAKES WITH MORE FORCE. I LOOKED AT MY OTHER CARS AND NONE OF THEM WOULD EVER ALLOW THIS SITUATION TO HAPPEN, THE BRAKE PEDAL NEVER PASSES THE ACCELERATOR IDLE POSITION. I NOW UNDERSTOOD WHAT HAD HAPPENED TO ME AND FEEL THAT IT IS A DANGEROUS SAFETY DEFECT. THE MORE YOU PUSH ON THE BRAKES TO STOP THE MORE YOU COULD UNKNOWINGLY PUSH ON THE ACCELERATOR. *TR
BRAKE PEDAL GOES HALFWAY TO FLOOR BEFORE IT STARTS SLOWING DOWN. SERVICE MANAGER AT RED RIVER HONDA IN DENISON,TX SAID THAT THE ABS MODULE WAS BYPASSING. THEY REPLACED IT TWICE WITH NO IMPROVEMENT. I WAS THEN TOLD BY THE SERVICE MANAGER THAT HONDAS SEEMED TO HAVE WEAK BRAKES. *TR
2007 HONDA ODYSSEY LX BRAKES DO NOT STOP VEHICLE QUICKLY ENOUGH. DANGEROUS. MY WIFE COASTED THROUGH AN INTERSECTION WHILE APPLYING ALL THE PRESSURE SHE COULD TO BRAKES. HAS BEEN TO DEALER AND THEY SAY HONDA DENIES THERE IS A PROBLEM. I HAVE READ ONLINE THAT THIS VEHICLE HAS BRAKE PROBLEMS DUE TO ABS AND MASTER CYLINDER ISSUE…
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2007 HONDA ODYSSEY LX BRAKES DO NOT STOP VEHICLE QUICKLY ENOUGH. DANGEROUS. MY WIFE COASTED THROUGH AN INTERSECTION WHILE APPLYING ALL THE PRESSURE SHE COULD TO BRAKES. HAS BEEN TO DEALER AND THEY SAY HONDA DENIES THERE IS A PROBLEM. I HAVE READ ONLINE THAT THIS VEHICLE HAS BRAKE PROBLEMS DUE TO ABS AND MASTER CYLINDER ISSUES, AND ALSO DUE TO POOR STOCK BRAKE PADS. BUT HONDA APPARENTLY DENIES ANY ISSUES. THIS VEHICLE IS DANGEROUS. *TR
MY HONDA ODYSSEY 2007 HAS VERY SOFT BRAKES. THE DEALER FIRST SAID IT WAS NORMAL BUT ON THE SECOND VISIT IS KEEPING THE CAR TO BLEED THE BRAKES. THE PEDAL GOES ALMOST TO THE FLOOR AT TIMES AND THE CAR TAKES ALMOST 200 FEET TO FULLY STOP AT TIMES. *TR
2007 HONDA ODYSSEY MINIVAN. BRAKE PEDAL BEGAN GOING ALL THE WAY TO THE FLOOR AFTER 10,000 MILES. DEALER HAS REPLACED THE MASTER CYLINDER AND MODULE (TWICE), AS WELL AS BLEEDING THE LINES OVER 4 ATTEMPTS TO FIX. NOW THEY ARE BEGINNING TO EXPLAIN THAT THIS IS NORMAL BEHAVIOR, EVEN THOUGH THE CHANGE WAS SUDDEN AND DRAMATIC AND THE …
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2007 HONDA ODYSSEY MINIVAN. BRAKE PEDAL BEGAN GOING ALL THE WAY TO THE FLOOR AFTER 10,000 MILES. DEALER HAS REPLACED THE MASTER CYLINDER AND MODULE (TWICE), AS WELL AS BLEEDING THE LINES OVER 4 ATTEMPTS TO FIX. NOW THEY ARE BEGINNING TO EXPLAIN THAT THIS IS NORMAL BEHAVIOR, EVEN THOUGH THE CHANGE WAS SUDDEN AND DRAMATIC AND THE VEHICLE IS OBVIOUSLY UNSAFE TO DRIVE. *TR
Official recalls
414V112000 · Fuel System, Gasoline:delivery:fuel Pump
Mar 14, 2014
American Honda Motor Co., Inc. (Honda) is recalling certain 2005-2010 Honda Odyssey vehicles manufactured June 23, 2004, through September 4, 2010. In the affected vehicles, the fuel pump strainer cover may deteriorate allowing fuel to leak out.
Consequence & remedy
Consequence: A fuel leak increases the risk of a fire.
Remedy: Parts to permanently repair the affected vehicles are not currently available. Honda will notify owners with an interim letter during May 2014. A second notice was mailed to owners October 6, 2014 when the remedy became available. Any vehicles that are currently leaking from the fuel pump cover will get a replacement, original cover. All vehicles, including those receiving the interim repair, will get an improved cover when they are available. Owners may contact Honda at 1-800-999-1009. The recall numbers associated with this campaign are JD9 (inspection and/or preliminary part replacement) and JE0 (final parts replacement).
13V500000 · Electrical System:software
Nov 1, 2013
American Honda Motor Company (Honda) is recalling certain model year 2007-2008 Honda Odyssey vehicles manufactured August 8, 2006, through September 8, 2008. Due to a combination of system components and software, the Vehicle Safety Assist System (VSA) may apply the brakes unexpectedly.
Consequence & remedy
Consequence: The vehicle may suddenly and unexpectedly brake hard, and without illuminating the brake lights, increasing the risk of a crash from behind.
Remedy: Parts to remedy these vehicles will not be available until the spring of 2014. Honda will send owners an interim letter notifying them of the issue and instruct them how to prevent unintended braking. A second notification will be sent when the parts become available. Interim notification was mailed in December 2013. The recall began on April 29, 2014. Owners may contact Honda at 1-800-999-1009 or visit their website at www.recalls.honda.com. Honda's recall number is JC5.
10V504000 · Service Brakes, Hydraulic:foundation Components:master Cylinder
Oct 22, 2010
HONDA IS RECALLING CERTAIN MODEL YEAR 2005-2007 ODYSSEY AND ACURA RL VEHICLES. BRAKE FLUID CONTAINING POLYMERS IS USED THAT ACTS AS A LUBRICANT FOR CERTAIN BRAKE SYSTEM COMPONENTS. IF REPLACEMENT BRAKE FLUID IS USED THAT DOES NOT CONTAIN SUCH POLYMERS, OR THAT CONTAINS ONLY SMALL AMOUNTS, A PART OF THE RUBBER SEAL LOCATED AT THE REAR OF THE BRAKE MASTER CYLINDER MAY BECOME DRY, AND THE SEAL MAY CURL DURING MOVEMENT OF THE PISTON. IF THIS OCCURS, A SMALL AMOUNT OF BRAKE FLUID COULD SLOWLY LEAK FROM THE SEAL INTO THE BRAKE BOOSTER.
Consequence & remedy
Consequence: A LEAK OF BRAKE FLUID COULD LEAD TO A CHANGE IN BRAKE PEDAL FEEL AND OVERTIME A DEGRADATION IN BRAKING PERFORMANCE INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE BRAKE MASTER CYLINDER SEAL FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING DECEMBER 2010. OWNERS MAY CONTACT HONDA AT 1-800-999-1009.
10V098000 · Service Brakes, Air
Mar 16, 2010
HONDA HAS NOTIFIED NHTSA OF A DEFECT IN CERTAIN MODEL YEAR 2007 AND 2008 ODYSSEY AND ELEMENT PASSENGER VEHICLES MANUFACTURED BETWEEN JULY 28, 2006 AND AUGUST 21, 2008. AIR CAN ENTER THE VSA MODULAR PUMP DURING AN INITIAL SELF-CHECK PROCESS THAT OCCURS SHORTLY AFTER EACH TIME THE ENGINE IS STARTED. IT IS POSSIBLE FOR ENOUGH AIR TO ENTER THE SYSTEM TO RESULT IN A BRAKE PEDAL THAT FEELS SOFT OR LOWER TO THE FLOOR.
Consequence & remedy
Consequence: IF THE OWNER DOES NOT HAVE ANY BRAKE SERVICE OR MAINTENANCE PERFORMED OVER A PERIOD OF MONTHS OR YEARS, THE SYSTEM CAN CONTINUE TO ACCUMULATE ENOUGH AIR TO AFFECT BRAKING PERFORMANCE, INCREASING THE RISK OF A CRASH.
Remedy: HONDA WILL NOTIFY OWNER AND HONDA DEALERS WILL REPAIR THE VSA MODULATOR BY REMOVING ANY EXISTING AIR IN THE BRAKE SYSTEM THEN APPLY SEALANT AND CAPS TO PREVENT AIR FROM ENTERING THE BRAKE SYSTEM FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MAY 3, 2010. OWNERS MAY CONTACT HONDA AT 1-800-999-1009.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
3PE13024 · Inappropriate Autonomous Braking
Opened Jun 25, 2013 · Closed Nov 4, 2013
Status: closed (inferred from source dates) · Electronic Stability Control
In a letter dated October 31, 2013, Honda Motor Company (Honda) submitted a recall notice to NHTSA's Office of Defects Investigation describing a defect in the Vehicle Stability Assist (VSA) system in approximately 344,187 model year (MY) 2007 and 2008 Honda Odyssey vehicles produced from August 8, 2006 through September 8, 2008 (NHTSA Recall 13V-500, Honda Recall JC5).The report describes a defect condition caused by a combination of VSA system components and software that is unique to the MY 2007-2008 Honda Odyssey vehicles.The condition may result in unexpected brake application by the VSA system with no brake lamp illumination.The braking forces resulting from the condition can approach the maximum braking capability of the vehicle.Honda's investigation determined that (1) if the yaw rate sensor off-set exceeds a certain value, (2) the sensor calibration is not completed before the vehicle starts moving after start-up, and (3) the vehicle is driven in a specific manner; the VSA system may build hydraulic pressure in the brake system resulting in heavy, unexpected braking without the driver applying the brake pedal.Honda estimates that the parts necessary to correct this condition will not be available until March 2014.Pending part availability, Honda will send interim letters to affected owners including instructions to avoid the defect condition using a procedure to ensure proper VSA system calibration after each vehicle start-up, as well as instructions about what to do if unexpected brake application occurs while driving.Once the remedy parts are available, Honda will send a second notice advising owners to bring their vehicle to their dealer for installation of a redesigned yaw rate sensor.This investigation is closed.
EA09014 · Air In Brake System
Opened Oct 19, 2009 · Closed May 11, 2010
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module
By letter dated March 15, 2010, American Honda Motor Corp. (HMC) notified the National Highway Traffic Safety Administration (NHTSA) that it will conduct a safety recall (NHTSA Recall No. 10V-098) to address a defect in approximately 412,000 model year (MY) 2007 and 2008 Honda Odyssey and Element vehicles equipped with an ABS/VSA/TCS modulator. The recalled Odyssey vehicles were built from August 2006 August 2008.The recalled Element vehicles were built from July 2006 to July 2008. According to Honda, during an initial self-check process that occurs shortly after each engine ignition cycle, the self-diagnostic software for the VSA modulator allows a vacuum condition that can exist for several hours, allowing air to enter the VSA modulator pump.Over time, and thousands of engine ignition cycles, it is possible for enough air to enter the system to result in a brake pedal that feels soft or lower to the floor.If the customer does not have any brake service or maintenance performed over a period of months or years, the system can continue to accumulate enough air to affect braking performance.To correct the safety defect, Honda dealers will remove existing air in the brake system then apply sealant and caps to the VSA modulator to prevent air from entering the brake system, free of charge. The action taken by Honda is sufficient to resolve the issues raised by this investigation. The agency will continue to monitor this issue and reserves the right to take further action if warranted by the circumstances.Accordingly, this investigation is closed.
PE09024 · Air In Brake System
Opened May 13, 2009 · Closed Oct 19, 2009
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
THE OFFICE OF DEFECTS INVESTIGATION (ODI) HAS RECEIVED 69 COMPLAINTS, AND HONDA HAS RECEIVED 613 COMPLAINTS AND FIELD REPORTS, ALLEGING LOW/SOFT/SPONGY BRAKE PEDAL TRAVEL IN MODEL YEAR (MY) 2006 THROUGH 2008 HONDA ODYSSEY MINIVANS.TWENTY-SIX ODI COMPLAINTS WERE ALSO REPORTED TO HONDA, RESULTING IN A TOTAL COMPLAINT COUNT OF 656.SOME COMPLAINTS ALLEGE THAT THE CONDITION RESULTED IN EXTENDED STOPPING DISTANCES, INCLUDING SOME REPORTS OF ROLLING PAST STOP SIGNS OR TRAFFIC LIGHTS.THERE ARE 14 ALLEGED CRASHES IN THE SUBJECT VEHICLE POPULATION RELATED TO LOW/SOFT PEDALS. IN RESPONSE TO ODI'S INFORMATION REQUEST FOR PRELIMINARY EVALUATION PE09-024, HONDA INDICATED THAT SMALL AMOUNTS OF AIR MAY ENTER THE BRAKE SYSTEM DURING INITIAL DIAGNOSTICS OF THE VEHICLE STABILITY ASSIST (VSA) MODULATOR WHILE THE PUMP IS BRIEFLY ACTUATED FOR SYSTEM DIAGNOSTICS AFTER THE ENGINE IS STARTED.THE AMOUNT OF AIR GRADUALLY INCREASES WITH EACH SUCCESSIVE ENGINE START CYCLE, RESULTING IN PROGRESSIVELY INCREASING BRAKE PEDAL STROKE.ACCORDING TO HONDA, THE CONDITION DOES NOT PRESENT A SIGNIFICANT RISK TO MOTOR VEHICLE SAFETY BECAUSE THE PEDAL STROKE GRADUALLY INCREASES, PROVIDING THE DRIVER WITH INFORMATION THAT THE BRAKE PEDAL HEIGHT IS CHANGING AND REQUIRES ATTENTION.HONDA HAS FURTHER INDICATED THAT THERE IS NO DETERIORATION OF BRAKING PERFORMANCE CAUSED BY THE SUBJECT CONDITION, EVEN THOUGH THE PEDAL HEIGHT AND FEEL ARE DIFFERENT, UNTIL PEDAL STROKE HAS REACHED THE END OF TRAVEL AND THE DRIVER CANNOT PRODUCE ANY ADDITIONAL BRAKE LINE PRESSURE.HONDA STATES THAT IT IS UNAWARE OF ANY VEHICLES THAT HAVE REACHED SUCH A CONDITION AND HONDA TESTING USING A LEAKING FIELD RETURN MODULATOR INDICATES THAT IT WOULD TAKE OVER A YEAR BEFORE THE PEDAL TRAVEL WOULD REACH ITS LIMIT DURING HARD STOPS WITH 200 N (45 LBF) OF PEDAL EFFORT - THE NOMINAL FORCE REQUIRED TO REACH ABS BRAKING MODE. ODI'S ANALYSIS OF WARRANTY DATA INDICATES THAT THE MY 2007-08 ODYSSEY VEHICLES HAVE EXPERIENCED THE ALLEGED DEFECT AT A RATE OF 0.67%.THE MY 2006 ODYSSEY VEHICLES HAVE EXPERIENCED THE ALLEGED DEFECT AT A SIGNIFICANTLY LOWER RATE (0.04%) THAN THE MY 2007-08 ODYSSEY.HONDA IMPLEMENTED A DESIGN CHANGE IN THE MY 2007 VEHICLES TO CHANGE THE VSA DIAGNOSTIC PROGRAM. THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS (EA09-014) FOR THE MY 2007-08 ODYSSEY VEHICLES TO CONTINUE TO INVESTIGATE THE SCOPE, FREQUENCY, AND SAFETY-RELATED CONSEQUENCES OF THE ALLEGED DEFECT.