general problems of the 2012 Toyota Tundra

17 problems related to other fuel system have been reported for the 2012 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Tundra based on all problems reported for the 2012 Tundra.

1 Other Fuel System problem

Failure Date: 08/08/2024

Wife was driving truck and immediately went into limp mode on the highway. Check engine light came on, no accelerating then died. Had to get it towed. This is the 3rd incident with this issue.

2 Other Fuel System problem

Failure Date: 02/02/2024

The fuel pump failed on my Tundra. Several dashboard check engine lights suddenly lit up to warn me of the issue. While I was able to safely get it to a mechanic to repair the independent Toyota certified mechanic I use shared they have seen a volume of these where the car stops immediately with the fuel pump failing completely. I was lucky as the day prior to this I was driving through mountain passes on the highway in colorado. I have since found out from the feedback from my mechanic that they have repaired a volume of these, and it is a known issue by Toyota who issued a technical service bulletin. The fuel pump needs to be replaced with a different specification - the original pump is not sufficient. My concern is putting driver/passenger safety at risk with a complete fuel pump failure while driving. I consider this a near-miss for me, and would worry about others that are about to have this issue.

3 Other Fuel System problem

Failure Date: 11/26/2023

Ecm safety recall air injection pump failure.

4 Other Fuel System problem

Failure Date: 11/30/2020

2012 Toyota Tundra has a known design flaw in that moisture is allowed to condense, accumulate and corrode in components of the secondary air intake system leading to decrease performance especially in regards to acceleration which is critical to operating a vehicle safely.

5 Other Fuel System problem

Failure Date: 07/31/2020

The trac off light and check engine light cans on at the same time. I took it to Toyota and they said there was an extended warranty of 10 years of 150,000 miles. If it was the secondary valves and air pumps. I got a call back and they said it was, big my VIN was not part of the extended warranty. This is an issues with 100s of Tundras. This is a safety issue. Because you can't go over 60 or get to 60 safely. The Toyota blogs are full of Tundra owners complaining. This needs to be fixed.

6 Other Fuel System problem

Failure Date: 07/27/2020

My 2012 Tundra had a trac off and engine light come on. This is the same problem for numerous Toyota Tundra in regards to failure of the secondary air valves and pumps. I was told my VIN number was not on the 10 year , 150,000 mile warranty for this same problem. I urge you to force Toyota to add my VIN number to the extended warranty. My vehicle cannot go over 60 and be safe. It was raining and rain got into the pump system. Toyota has replaced thousands of these badly designed system and more needs to be done. It cost over $2,000 to replace badly designed system.

7 Other Fuel System problem

Failure Date: 04/08/2020

Tl the contact owns a 2012 Toyota Tundra. The contact stated after the check engine light illuminated the vehicle was taken to walker Toyota located at (5735 coliseum blvd, alexandria, la 71303) to be diagnosed. It was determined that there was a hesitation in response when the accelerator pedal was depressed. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 97,000.

8 Other Fuel System problem

Failure Date: 05/08/2019

My 2012 Tundra has just under 70,000 miles on it and the trac light and engine light came on yesterday. Had it looked at and the mechanic says the problem is with the secondary air pump and it is a known problem. Called the dealer and they knew of the problem and told me there is a csp that covers certain 2012 Tundra's. Unfortunately the csp only covers the 5. 7 l. Engines and not my 4. 6l model. My mechanic says that everything is the exact same set up as far as the secondary air pump, it's just a different size engine. Not sure why one is covered but the other isn't but I'll have to suck it up and pay the price. Maybe if more people make Toyota aware of this they will eventually cover it. I'm a Toyota fan and have been driving them for 40 years and this won't push me away but it is disappointing.

9 Other Fuel System problem

Failure Date: 11/01/2018

At first I started hearing what sound like a fan running under the hood after I started my truck. About a week later my check engine light came on followed by the track light. Code p2442 which stated that the air injector pumps and valves were failing. We brought the truck to Toyota and they had told us that it would cost us 4000. 00 to get it fixed, after charging us 144. 72 to hook a code reader to it which would of cost us nothing to take it to auto zone. Our warranty was supposed to cover bumper to bumper up 10yrs or 100,000 miles with ever came first. They told us that our warranty expired the week before we brought it in.

10 Other Fuel System problem

Failure Date: 09/01/2018

Code p2440 switching valve. Warranties cover 2012 tacoma's but not Tundras. Part which is a switching valve causes the vehicle to go from 60 to 30 mph causing an unsafe condition.

11 Other Fuel System problem

Failure Date: 01/18/2018

Monday, January 15th I drove at 65 mph to work at and home on the freeway with no problems. Tuesday and Wednesday the truck was stationary due to cold weather conditions in houston, texas. Thursday morning the 18th, I drove at 65 mph to work via freeway with no problems. After lunch I drove at 45 mph back to work on a street and noticed the check engine and traction light came on and simultaneously the truck then starting driving extremely sluggish and and far below the speed limit obstructing the flow of traffic. I carefully got over and drove the truck only allowed at 30 mph back to the office. After carefully driving home via street at the end of the day I got home and removed the negative wire from battery and re-connected it to see if this would resolve the issue. After doing so, the results were the lights in the dash were now off and the truck drove proper with no hindrance. This would last until Wednesday 24th. Both lights came back on and the truck started again driving sluggishly. Its seem that when the light is off the truck drives fine, but when it is triggered the truck is drives extremely sluggish. Could the be a defective part? any help would be useful.

12 Other Fuel System problem

Failure Date: 03/24/2016

After starting the engine, the engine raised past red line rpm for several seconds. After slowing, I started to back out drive when engine raised again into red line rpm. Before I got it pulled back into drive, it raised 3 more times. Each time I managed to get to neutral.

13 Other Fuel System problem

Failure Date: 11/02/2015

I experienced an extreme power loss which made it very dangerous to drive. When bringing to the dealership they informed me that the secondary air intake system needed to be replaced at a cost of $4,000. Upon researching I found that this problem has occurred on similar vehicles dating back to 2007. A recall and replacement was issued for all effected vehicles from 2007-2010. It appears that the problem continues after that date but not enough customers have complained or experienced the problem yet.

14 Other Fuel System problem

Failure Date: 09/01/2014

The contact owns a 2012 Toyota Tundra. While attempting to drive the vehicle, the contact noticed that the check engine indicator illuminated. The dealer stated that there was a puncture in the fuel line. The vehicle was not repaired. The manufacturer was notified. The approximate failure mileage was 51,000.

15 Other Fuel System problem

Failure Date: 05/16/2013

Electrical buzzing noise from dash area when pressing gas pedal. Dealer says not a warranty item. After researching online many people experience same issue with several Toyota models.

16 Other Fuel System problem

Failure Date: 01/12/2013

Flex fuel models sold by gulf states Toyota have an issue where the engine's computer thinks there is e85 fuel (or an alcohol concentration that is much higher than actual) in the system when there is normal 10% or less gasoline actualy present. This can cause rough cold starts/idle, power loss, sudden rpm/power dropout, missing, and lessened fuel economy, etc. (different symptoms for different trucks). At this time there is no final fix and no available service bulletin. The only guidance at this time is to have your dealer see what alcohol concentration your truck is running and re-flash the computer if the readout is incorrect. Dealer also states to not accelerate aggressively. I have service schedule on 3/9/13 to address the problem for the third time. I purchased the vehicle new on 11/23/12.

17 Other Fuel System problem

Failure Date: 01/01/2013

Flex fuel models sold by gulf states Toyota have an issue where the engine's computer thinks there is e85 fuel (or an alcohol concentration that is much higher than actual) in the system when there is normal 10% or less gasoline actualy present. This can cause rough cold starts/idle, power loss, sudden rpm/power dropout, missing, and lessened fuel economy, etc. (different symptoms for different trucks). At this time there is no final fix and no available service bulletin. The only guidance at this time (3/5/13) is to have your dealer see what alcohol concentration your truck is running and re-flash the computer if the readout is incorrect. The issue occasionally returns for some users.


Other Other Fuel System related problems of the 2012 Toyota Tundra


Safety Ratings of Tundra Cars
Fuel Economy of Tundra Vehicles
Tundra Service Bulletins
Tundra Safety Recalls
Tundra Defect Investigations