Control module (ECM/PCM/BCM) failure on the 2010 Toyota Corolla
When control module (ecm/pcm/bcm) failure gets reported
Owners of the 2010 Toyota Corolla report control module (ECM/PCM/BCM) failure at a median of 5,000 miles. A quarter of the reports come in before 5,000 miles and a quarter after 25,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 92,000 miles. It is the 23rd most-reported problem on this model year.
The mileage distribution
The reported range runs from 1,400 miles at the tenth percentile to 75,000 miles at the ninetieth, a spread of 73,247 miles across the middle 80% of reports.
When the reports scatter this far, the mileage is telling you about how these cars were driven more than about the part itself.
75% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 1,353 miles | 4,900 miles | 6,000 miles | 23,900 miles | 74,600 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 $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 12 model years of this car. It shows up earliest on the 2010, at a median of 5,000 miles, and latest on the 2013 at 190,000 miles.
By volume the 2006 carries the most reports, with 87; the 2010 has 8. 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.
On monday (march 1st) toyota service called me and told me that according to toyota engineers' report, there is nothing wrong with the gas pedal and they said there is nothing to worry about the car. Toyota's official explanation is 'operating as designed, the ECM will command high idle at times for proper emissions system operation' this explanation does not make sense since there is a serious safety issue here; I am driving the car in the 5th gear and around 3000 RPM. When I need a sudden stop, I let go the gas pedal and hit the break. The ECM commands high idle even I hit the breaks; the pistons are still working (the engine is still running in gear) with 3000 RPM so I am not able to slow down or stop. This is a serious safety problem. *tr
My 2007 toyota corolla had a failed ECM which caused the check engine light to come and stall the engine. In addition, my vehicle had high RPM and shifting gear problems as well. The failed ECM issue was discovered by a specific code for check engine light. I called toyota and they were certainly aware of the problem however told me that they did not have enough complaints to recall the issue. I called toyota dealer and they informed since my mileage was 95,000 and the warranty would only cover up to 80,000 miles. I ended up getting the ECM replaced for about $800 at carmax which was $700 cheaper than what toyota wanted to charge. I called toyota headquarters again to complain and was left with no resolution. After my research online, this was a well known problem to toyota however they failed to address this issue. This issue occurred to many vehicles as low as 35000 miles under warranty and still continue to occur out of warranty over 80000 miles. I feel if they had a recall on this issue, I would have never had these issues with my car being stalled and having to replace the ECM. I recently read an article in news about your…
While driving my corolla, even I do not hit the gas pedal, the RPM stays around 2000 and sometimes it started to stuck around 3000 RPM for 15 to 30 seconds than goes to normal. I had difficulty to slow down in busy traffic, because even I hit the brakes it does not cut the gas so the engine still tries to run and the car still tends to go, so I am not able to slow down or it takes time to slow down. I am driving my toyota in the 5th gear and around 3000 RPM. When I need a sudden stop, I let go the gas pedal and hit the brake. The etcs commands high idle even I hit the breaks; the pistons are still working (the engine is still running in gear) with 3000 RPM so I am not able to slow down or stop. This is a serious safety problem. How come ECM would command for high idle from time to time? How can I stop the car or slow down in need while ECM is commanding high idle? It is impossible to have a proper control on the car when ECM commands high idle. Who can give me guarantee that it would not get stuck in higher idles? (because it used to stuck around 2000 RPM and right now it also started sticking around 3000 RPM). When I get close to…
Also reported on the 2010 Toyota Corolla
Other steering problem
Airbag inflator rupture
Other speed control problem
Other brake problem
Other electrical problem
Other body or interior problem
How far this goes
Complaints are voluntary, so 8 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 2010 Toyota Corolla?
Across 8 owner reports that included an odometer reading, half were filed by 5,000 miles. A quarter were filed before 5,000 miles and a quarter after 25,000 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 2010 Toyota Corolla?
8 reports have been filed with NHTSA, about 0.1 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