Vehicle was in motion on rainy, wet highway when check engine light went on and traction control was shut off. The secondary air injection switching valve is apparently stuck closed, which for some reason shuts off the traction control. It is my understanding from speaking with other Tacoma and Tundra owners that had the valves gotten stuck open, the vehicle goes into "limp mode" which automatically decreases speed to 20mph. Obviously, either of these occurrences are particularly unsafe in rainy and wet conditions, and the decrease in speed is unsafe during any highway traveling. This is apparently a big enough issue on the Tundra models for Toyota to extend the warranty to 150,000mi, yet they have done nothing for the Tacoma which have an identical system and parts.

- Matawan, NJ, USA

Secondary air injection pump. Receiving P2442 code and truck is going in to limp mode

- Bradenton, FL, USA

Error 2440/2442 came up a few days ago when starting the truck to go to work(cool morning) - secondary air injection system switching valve stuck open bank 1/2. I first noticed that it indeed put the truck into limp mode, which causes the engine to decrease power so I could hardly accelerate.(pressure sensor in exhaust went off because valves were stuck open) I knew exactly what the problem was due to many having the same issues on a Tacoma forum I am on.(all with early 2012's, a redesigned pump was made and installed on later built 2012S) I took apart the system after getting a shaft from my local dealer saying it was under powertrain warranty.(knew it was unlikely as I have almost 70K miles, but thought why not try) after reading about other's ways of solving the issue, I took apart both the air pump and valve assembly to inspect them. I was amazed to find a soaked air filter with water sitting in the plastic molding under it, I also found the rubber had been burnt up in the valve assembly, along with deposits due to moisture.(pictures attached) from what I have read, and what I have seen, Toyota installed this defective system on early 2012 Tacoma's before a redesigned pump(not sure on valves) and programming that is supposed to run the air pump after the engine shuts off to get rid of the moisture. I bought new valves for $479, but will also have to buy a bypass for $350 because I know the air pump will still bring in moisture and cause the valves to fail again, this bypass allows the pump/valves to communiate to ECU that they run ok but the air pump never runs. Toyota issued a tsb for Tundra's and sequioa's for the same reason, yet they are ignoring Tacoma.(attached pdf) also just noticed on this tsb they were very quick about issuing it as well, can't see how they didn't know that Tacoma's had the same system installed.

- Carencro, LA, USA

P2440-P2442 error code. Secondary air injection valves and pump. A poorly engineered part that continues to break and Toyota wont address the issue like it has on the Tundra & sequana (sp). They know they have a bad part.

- Benbrook, TX, USA

I was driving to work this morning and when entering a highway my truck completely stopped accelerating and would not go over 40 mph, anf would not go over 1200 rpms. I have researched the codes that popped up from my check engine light, and have found a ton of other people are having the same issue. The code is P2442, and indicates a failed air injector that the manufacturer has not issued a recall or safety advisory.

- San Antonio, TX, USA

Check engine light and trac off appeared and truck entered limp mode. Codes P2440/P2442 on diagnostics. Secondary air inverter failed along with air pump. Emissions control problems. Toyota did not acknowledge any responsibility.

- Honolulu, HI, USA

A problem common to Toyota's occurred with my vehicle. The secondary air injection pump failed. The Tacoma did not have sufficient power and would not reach certain RPM's. the bill is $2,500. The dealership told me it happens quite often with Toyota. They have said this is not part of the powertrain warranty.

- Raleigh, NC, USA

At 57000 miles check engine and getting P2442 code at start-up. Checked and it is a bad secondary injection pump. Checked on internet and there are many others with the same problem and Toyota says it's not under warranty $1900 to fix

- Clermont, FL, USA

The engine light came on - took to dealer - was told secondary air flow and pump need to be replaced.

- Portland, OR, USA

Headed to work to find check engine light illuminated. Truck has less than 41,000 miles. Went to autozone, code reader provided P2442 and P2440 errors related to the secondary air injection system valves. Followed up with local Toyota dealer. Dealer ran diagnostic and found secondary air injection system valves stuck open in banks 1 and 2. dealer wants to replace parts 17600-0P040: Pump assembly; 25710-31022: Valve assembly; and the 4 related gaskets, part 17377-31010. Quote was for almost $2400. Again, the vehicle is 2012, less than 41K miles! researching the Tacoma forums online, this appears to be a common problem with this generation model and more even more so with 2012's. one of the dealer's service advisors informed me that this is also a common problem with Tundra. Furthermore, while driving, the vehicle would go in and out of "limp mode" and I had no warning as to when it would or would not be in this mode, other than by the way the vehicle was handling. Limp mode would only allow transmission to shift into 2nd or 3rd and no more than 30 mph, less if climbing an incline. At other times, vehicle would drive normally. The switching in and out of this protective mode seems particularly dangerous.

- Tallahassee, FL, USA

Secondary air injection failure at 58K miles. Dealer quoted $2200 to replace valves and pump. Several failures with 2012 reported

- Phenix City, AL, USA

The secondary air injection pump's valves went bad with the vehicle only having 30K miles. This caused the truck to go into limp mode and did not allow for acceleration while driving. This is a very dangerous aspect when driving on the freeway. Nothing happened to the vehicle to cause this failure, it just started up one day and was bad.

- Anchorage, AK, USA

Secondary air injection switching valve failure stuck in open position causing limp mode in the truck. Truck is not able to get to speed above 40 mph. This happened as I was pulling out of my neighborhood onto a state route with speed limit of 55 mph and cars going way faster than that. This could pose a danger if situations where speed it required to get out of the way of another car. Truck only has 57K miles on it. This is a supplemental emissions system and should not cause the truck to be useless if fail.

- Kansas City, MO, USA

Takata recall I stopped the at traffic light ion city street without rain. I just started driving, when light changed to green, there was no steering feeling at all for a few second. The car waved side by side twice without my controlling. Then I drove slowly and carefully, it's ok. I bought car to Toyota dealer the next day, they said steering system is ok, may be because of wet belt.

- St. Petersburg, FL, USA

There is a plastic foot rest on the driver's side floor board that comes loose and gets tangled up in the driver's feet while driving. This creates a driving hazard and could cause an accident.

- Ponchatoula, LA, USA

Secondary pump does not work when is cold turning trac and ing light on causing loose of power and hight gas consuming. Dealer says warranty does not cover.

- Carolina, PR, USA

I started my Tacoma, the check engine light and trk off lights were on and after taking them to the dealer learned that the vechile was in limp mode. The truck will not easily accelerate beyond 30mph. This is caused by error code P2442 and P2440, from a known faulty part that Toyota refuses to replace.

- Wichita, KS, USA

As I've read from numerous other 2012 Tacoma owners on tacomaworld.com, my secondary air injection switching valve has failed at 65K miles. This seems to be a recurring issue with all 2012 similar Tacoma models and should absolutely be recalled and replaced for free! until fixed, my truck is undrivable, meaning the cel light is on and the truck won't go faster than 30 mph.

- Simi Valley, CA, USA

The secondary air injection systems seems to fail quite frequently on these 2012 Tacoma with little to no help from Toyota to take care of this issue as a recall. These are known to fail right after your out of warranty and to charge it's loyal customers over $1000 for a part that should not fail or a part that should be covered is absurd. I have been a loyal Toyota customer my whole life but the issues of the Tacoma are making me rethink my decisions as an automotive consumer

- Arlington, TX, USA

The secondary air intake pump and switching valve stopped working after only 28,000 miles. Car went directly in limp mode making it undrivable. Dealer wanted $2,100 for parts and labor and said it was not covered under the warranty.

- Toms River, NJ, USA