The Lemon IndexThe valve that lets cold-start air into the bank 2 exhaust is stuck open. Full P2442 page
84 owner complaints · the #1 code Toyota Tacoma owners name · 69% of Toyota Tacoma complaints that name a code (every car: 0.7%)
Middle of 58,000 miles · most between 47,000 and 78,000 (80 owners gave it)
Toyota Tacoma owners named P2442 in 84 complaints to the U.S. government (NHTSA), most often on the 2012 and 2015 model years, at a middle of 58,000 miles. The part they name most is the secondary air pump or valve (49 complaints). Complaints are owner reports, not proof of a defect.
Toyota Tacoma model years that report P2442
Owner complaints naming P2442, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
Mileage when it happened
58,000 miles is the middle of what 80 owners entered. Half were between 47,000 and 78,000 miles.
The mileage on the complaint form, when the owner gave one.
What owners say caused it or fixed it
The most-named part is the secondary air pump or valve, in 49 of the 84 complaints (58%). 13 of those mention it being replaced or repaired, and 1 say the problem came back afterwards. Next: fuel injectors (6).
- Secondary air pump or valve49 complaints13 mention a repair or replacement, 1 of them says the problem came back
- Fuel injectors6 complaints2 mention a repair or replacement · what owners paid
14 complaints mention a recall and 32 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P2442
55% of these complaints say the check engine light came on.
- Loses power or goes into limp mode55%46 of 84 complaints
- Stalls or shuts off4%3 of 84 complaints
- Brakes or ABS act up2%2 of 84 complaints
Share of the complaints naming P2442 whose text also describes each problem. A complaint can describe more than one.
Codes owners report with it
Other codes named in the same Toyota Tacoma complaints, and in how many.
Keep going
- P2442: meaning, causes and every car that reports it
- Toyota Tacoma reliability by year
- 2012 Toyota Tacoma problems and recalls
Other codes Toyota Tacoma owners report
P2442 on other cars
Toyota Tundra (19)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P2442 means
The valve that lets cold-start air into the bank 2 exhaust is stuck open. Exhaust moisture can then reach and damage the air pump.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
- Failed switching (check) valve
- Failed air pump
- Water or carbon in the valve
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11324105, 11320809, 11292261, 11235367, 11208428, 11205116, 11204350, 11194082, 11183500, 11157138, 11156453, 11152096 and 72 more.
Quick answers
What does P2442 mean on a Toyota Tacoma?
Secondary Air Injection System Switching Valve Stuck Open (Bank 2). The valve that lets cold-start air into the bank 2 exhaust is stuck open. Exhaust moisture can then reach and damage the air pump.
Which Toyota Tacoma years have the most P2442 complaints?
In complaints to NHTSA, owners of the 2012 (83), 2015 (1) Toyota Tacoma named P2442 most (84 complaints in all, 2012–2015). Raw counts, not a failure rate.
What fixes P2442 on a Toyota Tacoma?
Owners most often name the secondary air pump or valve (49 of 84 complaints), then fuel injectors. That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
At what mileage does P2442 show up on a Toyota Tacoma?
Owners who gave their mileage reported a middle of 58,000 miles; half were between 47,000 and 78,000 (80 owners).
Can I drive my Toyota Tacoma with P2442?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Sources: NHTSA owner complaints that name P2442 on the Toyota Tacoma, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.