Radiator or coolant leak on the 2001 Honda Odyssey
When radiator or coolant leak gets reported
Owners of the 2001 Honda Odyssey report radiator or coolant leak at a median of 1,100 miles. A quarter of the reports come in before 1,100 miles and a quarter after 1,100 miles, from 12 reports that carried an odometer reading.
A part like this is normally expected to survive 98,000 miles. It is the 11th most-reported problem on this model year.
The mileage distribution
The reported range runs from 1,100 miles at the tenth percentile to 1,100 miles at the ninetieth, a spread of 0 miles across the middle 80% of reports.
Reports bunched into a band this tight usually mean the component has a life of its own: it goes at roughly the same mileage regardless of who owns it.
92% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 1,064 miles | 1,064 miles | 1,064 miles | 1,064 miles | 1,064 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Putting it right typically runs $350–$1,900 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 9 model years of this car. It shows up earliest on the 2001, at a median of 1,100 miles, and latest on the 2003 at 160,000 miles.
By volume the 2005 carries the most reports, with 18; the 2001 has 14. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
The vehicle experienced the following: out of alignment, loud bang/ticking, shaking, engine hesitation, inoperative A/C, a contaminated filter with metal shavings, A/C drain tube was rubbing and draining on the steering rack boot, coolant reservoir was empty and the right front seal on the body was damaged due to it being improperly placed, A/C knob was broken, the A/C airflow automatically changed, when the A/C blower motor speed decreased, various dash lights would dim, the hood latch was defective, static shock problem, there was a coolant smell, due to the reservoir fluid level, the sliding door was inoperative, the transmission was defective, the crankshaft pulley and the steering wheel vibrated, the right door seal had come apart, the splash shield clip was missing, the idle speed fluctuated from 750 to 2000 RPM with the vehicle in park/neutral, and immediately after, the mil light had come on. The repairs are as followed: wheels aligned, A/C condenser and compressor evaporation dryer, intake manifold, reinstalled rear evaporator/heater unit, installed a drain tube in the retainer bracket, hood latch was replaced, PCM…
The vehicle experienced the following: out of alignment, loud bang/ticking, shaking, engine hesitation, inoperative A/C, a contaminated filter with metal shavings, A/C drain tube was rubbing and draining on the steering rack boot, coolant reservoir was empty and the right front seal on the body was damaged due to it being improperly placed, A/C knob was broken, the A/C airflow automatically changed, when the A/C blower motor speed decreased, various dash lights would dim, the hood latch was defective, static shock problem, there was a coolant smell, due to the reservoir fluid level, the sliding door was inoperative, the transmission was defective, the crankshaft pulley and the steering wheel vibrated, the right door seal had come apart, the splash shield clip was missing, the idle speed fluctuated from 750 to 2000 RPM with the vehicle in park/neutral, and immediately after, the mil light had come on. The repairs are as followed: wheels aligned, A/C condenser and compressor evaporation dryer, intake manifold, reinstalled rear evaporator/heater unit, installed a drain tube in the retainer bracket, hood latch was replaced, PCM…
The vehicle experienced the following: out of alignment, loud bang/ticking, shaking, engine hesitation, inoperative A/C, a contaminated filter with metal shavings, A/C drain tube was rubbing and draining on the steering rack boot, coolant reservoir was empty and the right front seal on the body was damaged due to it being improperly placed, A/C knob was broken, the A/C airflow automatically changed, when the A/C blower motor speed decreased, various dash lights would dim, the hood latch was defective, static shock problem, there was a coolant smell, due to the reservoir fluid level, the sliding door was inoperative, the transmission was defective, the crankshaft pulley and the steering wheel vibrated, the right door seal had come apart, the splash shield clip was missing, the idle speed fluctuated from 750 to 2000 RPM with the vehicle in park/neutral, and immediately after, the mil light had come on. The repairs are as followed: wheels aligned, A/C condenser and compressor evaporation dryer, intake manifold, reinstalled rear evaporator/heater unit, installed a drain tube in the retainer bracket, hood latch was replaced, PCM…
Also reported on the 2001 Honda Odyssey
Other powertrain problem
Complete transmission failure
Other body or interior problem
Strut, shock or spring failure
Airbag inflator rupture
Other suspension problem
How far this goes
Complaints are voluntary, so 14 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does radiator or coolant leak happen on the 2001 Honda Odyssey?
Across 12 owner reports that included an odometer reading, half were filed by 1,100 miles. A quarter were filed before 1,100 miles and a quarter after 1,100 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is radiator or coolant leak on the 2001 Honda Odyssey?
14 reports have been filed with NHTSA, about 0.3 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed