Control module (ECM/PCM/BCM) failure on the 2002 Dodge Grand Caravan
1 crash 1 fire 2 of the 27 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When control module (ecm/pcm/bcm) failure gets reported
Owners of the 2002 Dodge Grand Caravan report control module (ECM/PCM/BCM) failure at a median of 45,000 miles. A quarter of the reports come in before 40,000 miles and a quarter after 60,000 miles, from 17 reports that carried an odometer reading.
A part like this is normally expected to survive 92,000 miles. It is the 3rd most-reported problem on this model year.
The mileage distribution
The reported range runs from 30,000 miles at the tenth percentile to 80,000 miles at the ninetieth, a spread of 49,800 miles across the middle 80% of reports.
A window that narrow is the signature of a part that fails on its own schedule rather than on how the car is driven — which is usually a design or supplier problem rather than wear and tear.
18% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 30,400 miles | 40,000 miles | 47,000 miles | 60,000 miles | 80,200 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
Of these reports, 1 a crash and 1 a fire are mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $700–$3,000 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 18 model years of this car. It shows up earliest on the 2003, at a median of 35,000 miles, and latest on the 1996 at 90,000 miles.
By volume the 2005 carries the most reports, with 109; the 2002 has 27. 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.
Reported airbag light to dealer. Set up appointment. Brought vehicle in, was informed that the body controler not communicating with airbag modual. Wiring ok, needs airbag module or BCM. Was then informed that it is not under warranty due to mileage. The mileage at the time of call into dealer was around 34,000. Because of their busy schedule it took over a month to get the vehicle into them. By the time I drove over to the appointment a month later the vehicle was "out of warrranty". Parts on back order.
1)air bag light comes on and off 2) failure can result in airbag not deploying properly 3)dealer (douglas county dodge) wants to charge for repair. Research indicates that this has been a problem with dodge since at least 1996. *la
Air bag sensor light continued to stay on. As a result horn and cruise control become inoperable. A recall for the clock spring was issued. However, this vehicle was not included in the recall due to VIN. *ak *tc
Also reported on the 2002 Dodge Grand Caravan
Airbag warning light or occupant sensor fault
Other steering problem
Other body or interior problem
Other powertrain problem
Other electrical problem
Steering rack, gear or tie rod failure
How far this goes
Complaints are voluntary, so 27 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 control module (ecm/pcm/bcm) failure happen on the 2002 Dodge Grand Caravan?
Across 17 owner reports that included an odometer reading, half were filed by 45,000 miles. A quarter were filed before 40,000 miles and a quarter after 60,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is control module (ecm/pcm/bcm) failure on the 2002 Dodge Grand Caravan?
27 reports have been filed with NHTSA, about 0.5 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