general problems of the 2012 Toyota Tacoma

28 problems related to power train have been reported for the 2012 Toyota Tacoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Tacoma based on all problems reported for the 2012 Tacoma.

1 Power Train problem

Failure Date: 09/18/2023

My truck started having a vibration when driving around 45-55 mph. This problem first became noticeable when it had about 115,000 miles on it. Over time the speed that the vibration became noticeable at gradually increased. By 125,000 miles on the truck, it was vibrating hard between 60 and 70 mph. The dealership determined that the problem was that the drive shaft was out of balance and that it had to be replaced. They replaced the drive shaft, but this doesn't seem like a problem that should creep up with that relatively few miles on the vehicle, and I have read that if the drive shaft actually fails, it can severely damage the vehicle and potentially cause injury.

2 Power Train problem

Failure Date: 10/20/2022

Drivetrain vibration and cricket chripping noise; likly coming from propeller shaft.

3 Power Train problem

Failure Date: 01/13/2021

When accelerating the truck lost all power and acceleration. Engine light is on. Engine will not increase rpm when accelerator is pressed. Truck will slowly drive but is unsafe to be on the road as it slowly accelerates up to 20-30mph max. Vehicle was merging into traffic from parking lot access.

4 Power Train problem

Failure Date: 05/01/2019

60,000 miles. Three years ago the airbag light came on. We brought it and paid for diagnostics but no answers. Now the check engine light and track off are lighting (not related to first issue) and the truck is in slowdown mode. We replaced the gas-cap but it didn't fix the issue. Disappointed in what used to be a quality company.

5 Power Train problem

Failure Date: 04/04/2019

During normal driving, the check engine light and traction control off light came on and truck immediately went in to limp-home mode. I had it scanned for codes at the local auto parts store and it came back with p2440 and p2442 which seems like a common issue with a valve in the secondary air injection system. I quick google search showed that some 2012 Tacoma owners are getting this covered under a special warranty extension, so I puttered over to the Toyota dealership expecting to hear the same story, but they are telling me the ecm computer is bad. Which I am trying to get clarification on since I can't find any ecm failure issues for this make and model year.

6 Power Train problem

Failure Date: 04/01/2019

Check engine light with trac off light comes on. No power. Air idol control valve stuck open.

7 Power Train problem

Failure Date: 12/31/2018

Drive train vibration. Toyota has a warranty enhancement program for this issue through the 2011 model, but this is a 2012 model with same issue. Situation occurs during acceleration.

8 Power Train problem

Failure Date: 11/15/2017

Check engine light and trac off light came on. Truck went into "limp" mode and would only go about 35mph. Checked the error code and it was p2442 which says the secondary air injection system is failing. Truck has only 55k miles on it and has been regularly maintained by Toyota dealerships every 6 months / 5k miles. Dealership has said it will be $2023 to replace the system. There should be a recall or extended warranty on this injection system.

9 Power Train problem

Failure Date: 09/12/2017

I start up the truck and pull out in to the street. Whether at an intersection or making a turn, I push on the accelerator and nothing happens. The rpms don't increase, engine makes no sound - and I am left sitting in the middle of the road. I push the accelerator to the floor and eventually the engine comes to life and the truck moves forward. Happens more often than not when the vehicle is "cold" - within the first 20-30 minutes of operation. The accelerator is not linked directly to the engine through a cable but is a drive by wire. I have maintained my Tacoma meticulously since purchase including tune ups, oil changes, etc. I have cleaned the mass air flow sensor with no change. The problem still persists. It is very dangerous to be in the middle of an intersection with a vehicle that has lost power.

10 Power Train problem

Failure Date: 07/27/2017

Check engine light on, trac off light on, engine power weak check engine code- p2441. This has been a common issue with Toyota suvs, and trucks! car is put into limp mode. Extended warranty on tundra with same part problem. Not Tacoma. Shameful and dangerous for Tacoma owners.

11 Power Train problem

Failure Date: 07/26/2017

While commuting to work the engine light and traction control light came on, causing my truck to slow down, very slow. It would not let me accelerate and disabled my progress to around 2000 rpms. This could have been a very serious or a dangerous situation especially if I was towing a load or in a major traffic situation. Codes - 2440 and 2442 were the causes of this scary account.

12 Power Train problem

Failure Date: 05/26/2017

The secondary air intake system goes out fairly quickly. My vehicle is at 72,500 miles. This causes the car to go into "limp" mode which makes the car go a maximum of 40mph. This can be very dangerous if it were to kick in while entering the highway. It is an emissions item, but Toyota is not covering it under the emissions warranty.

13 Power Train problem

Failure Date: 03/15/2017

The contact owns a 2012 Toyota Tacoma. While driving various speeds, the vehicle failed to accelerate. There were no warning indicators illuminated. The vehicle was taken to dayton Toyota (2291 us-130, dayton, NJ 08810, 732-329-9191), but the failure could not be duplicated. The failure recurred several times and the vehicle was taken back to the same dealer. The technician diagnosed that the clutch needed to be replaced. The manufacturer was made aware of the failures and offered to cover the cost of the parts while the contact covered the labor cost. The failure mileage was 33,000.

14 Power Train problem

Failure Date: 03/09/2017

Cel code p2442,p2445 dealership says the air switching valve needs to be replaced. I have 75k miles on truck. Dealer is charging me 1200$.

15 Power Train problem

Failure Date: 02/25/2017

Code p2440 and p2442. Air injection system valves are stuck open (related to emissions control unit) which causes the vehicle to go into 'limp' mode abrupbtly. This renders the vehicle undriveable, and can occur in the midst of driving causing serious danger to the driver and fellow drivers on the road. Toyota is unwilling to cover under any powertrain or emissions warranty. This issue is pervasive among 2012 Tacoma owners and Toyota redesigned the system as early as 2013 which implicates their knowledge of such a defect.

16 Power Train problem

Failure Date: 11/29/2016

Check engine light came on, trac off light is on. My truck has no power and is unsafe to drive. The dtc is p2442. Secondary air injection system switch valve stuck open bank 2. Toyota knows they have a emissions issue. My vehicle is at the dealership now.

17 Power Train problem

Failure Date: 11/21/2016

We just paid Toyota a little over $2,000 to replace the secondary air injection system. The switching valve was stuck closed according to Toyota. This is a 4 year old truck. It is unreal to spend this kind of money this early for this. The tundra has recalls for this same issue.

18 Power Train problem

Failure Date: 09/12/2016

Tacoma went in "limp mode" engine light and trac off light illuminated; cause the car to be extremely under power. Vehicle extremely under power causing to be dangerous in traffic. Code p2442 secondary injection system failure; common to other Toyota vehicles including tundra's. Toyota acted resumable with tundra's with extending warranty repairing but at this time refuses to repair known failures in Tacoma's.

19 Power Train problem

Failure Date: 09/06/2016

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.

20 Power Train problem

Failure Date: 07/19/2016

My 2012 Tacoma with 45,000 miles got a check engine light and "trac off" light when I started it to go home. I was merging onto the interstate and unable to go above 40 mph. This was obviously not safe so I exited and took it to a dealer. They cited trouble codes p2440 and p2442 and said they needed to replace secondary air injection valve (pn 25710-31022) for a total cost of $940! according to forums and the NHTSA. Gov site, this is a very common complaint with this year and model. I just bought this last July and I never expected to have to replace parts anytime soon.

21 Power Train problem

Failure Date: 06/03/2016

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.

22 Power Train problem

Failure Date: 08/20/2015

At aproximate 40 mph and at a constant speed the vehicle starts to shutter or shake, feels like it wants to down shift or up shift maybe its confused. Dealer could not duplicate 2 times.

23 Power Train problem

Failure Date: 07/01/2015

Vehicle lunges when you come to complete stop, better hold the brake with some force any time stopped, Toyota service says it happens all the time, its normal !!.

24 Power Train problem

Failure Date: 12/01/2014

My 2012 Tacoma is not shifting properly. It is shifting very hard and a bit erratic when driving, and when I am completely stopped at a light, the truck will sometimes violently surge forward making it feel like another vehicle has hit me from behind. It does not happen all the time, but it seems to happen more when it is cold. I took it to the dealership only to be told they could not replicate it, and this is normal for a Toyota. The dealership also said that Toyota is aware of this, all Toyotas do it (even the brand new ones), and nothing can be done. My truck is still covered by the Toyota 5 year waranty and the limited lifetime warranty offered from the dealer when I purchased it. I feel like they are not honoring their warranty. If this is true and Toyota is not correcting these issues, guess I won't be buying that 2015 4-runner I really want!.

25 Power Train problem

Failure Date: 02/19/2014

Loud whinning noise from under vehicle at speeds between 30mph and higher.

26 Power Train problem

Failure Date: 10/30/2013

This doesn't happen all the time but occasionally when the truck comes to a stop and the brake pressed the vehicle will accelerate with a surge and feel like someone has bumped you from behind but there will be no one behind you. I have taken the vehicle to the dealer and they made some adjustments but I continue to experience the problem. This has happened since I bought the truck. I purchased the truck with 1200 miles.

27 Power Train problem

Failure Date: 03/12/2013

There is a vibration in the entire drive terrain when accelerating from a stop. The vibration only occurs from a stop and between 5-20 mph. This was first noticed in March of 2013 and the dealer (middle town Toyota) and us corporate Toyota were made aware, but was told nothing can be done. As of today, the vibration appears to be getting worse. There has not been any loss of control yet of mechanical failures, but with the vibration getting worse, it is only a matter of time before failures start occurring.

28 Power Train problem

Failure Date: 02/03/2012

At 300 miles I noticed upon downshifting ( I believe 3-2 or 2-1) a rumblestrip vibration feeling. I took the truck to the dealer and they said it was normal. It still occurs everytime I downshift (sometimes stronger feeling then other times) I researched previous years with the same complaint. . It cant be healthy for the transmission clutches. I now have 1300 miles. . . Still happening. . . Any thoughts?.



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