Secondary air injection valve stuck codes p2440,p2442. Truck goes into limp mode and you can only go a max of 40 MPH.Toyota knows about these issues and does nothing about it
2012 Toyota Tacoma electrical problems
severe 18 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
18
Recalls
0
Avg fix
$850
1crash
When does it fail?
Of the 18 electrical complaints filed for the 2012 Toyota Tacoma, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 9 years — the issue may be aging out of the active population.
What owners are reporting 2 most recent
When I was leaving work the other night my 2012 tacoma went into limp mode and presented the CEL and trac off lights on the dash. After reviewing the many blogs on the subject and taking the vehicle to the mechanics, I have found out that the secondary air valve is likely stuck in the open position. The mechanic has quoted me a price of $1,142 ($780 for the part) to replace the whole system…
Had electrical trouble with your 2012 Toyota Tacoma?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2012 Toyota Tacoma?
It's a meaningful issue. 18 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 16 complaints that reported odometer mileage, most electrical failures cluster between 51,000 and 97,000 miles, with the median around 78,000. A quarter of owners report trouble before 51,000; a quarter make it past 97,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2012/Toyota/Tacoma.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.