Check engine light

You should re-read what you wrote. It's a little mixed up. From what I gather you have a check engine light with the code P0171. You got it after driving through deep water.

First thought is check to see if the air filter is wet.
Second thought is MAF sensor is dirty.

 

"The MAF (Mass Air Flow) Sensor is dirty or faulty Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry. There could be a vacuum leak downstream of the MAF sensor Possible cracked vacuum or PCV line/connection Faulty or stuck open PCV valve Failed or faulty oxygen sensor (bank 1, sensor 1) Sticking/plugged or failed fuel injector Low fuel pressure (possible plugged/dirty fuel filter!) Exhaust leak between engine and first oxygen sensor"

 

"Clean the MAF sensor. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling Inspect all vacuum and PCV hoses, replace/repair as required Inspect all hoses and connections in the air intake system Inspect and/or test the intake manifold gaskets for leakage Check for a dirty fuel filter and proper fuel pressure Ideally you'll want to monitor short and long term fuel trims using an advanced scan tool If you have access, you may want to run a smoke test"

 

"Usually means vacuum leak on the intake manifold gasket, a vacuum hose, PVC hose, etc, or the MAF is dirty, or there is a fuel delivery problem"


Check the vacuum hoses first!

 

That's good. The code prob just needs to be reset at this point. I bet you corrected the issue.

 

Purchase an UltraGauge, hook it up in the truck and clear the code yourself or have O'Reilly or someone clear it.

And Bry- Thank you good sir.

 

Hopefully that was for 35000 miles and not 3500

 

I got this one today. P0101



Slightly different description but falls under, MAFS. Hoping to find a simple hose like you. Actually think the description is more in the lines of wiring. Will look into it tomorrow.

 

No. Drop in AFE dry filter. No oil.

 

Installed the drop in in July. Never had the code till now. Shouldn't be the problem.
Low end is fine.
Installed the exhaust Monday. Code came up Friday. Shouldn't be exhaust though either. Just a muffler replacement.

 

Out of curiosity, try popping the stock filter back in just for giggles to see what happens.

 

Reset this morning and was fine till I got up around 75-80 on the highway then got the code again. No check engine light this time.
Suspended the code and this showed up
Might be an issue with the ultra gauge. Don't know.

I emailed the BA Muffler guys and they said that code is very common for Tundras. Happens to his with very large tires and goes away with smaller tires installed. Shouldn't be related to exhaust.

 

No but I'm considering resetting everything to clean the system out.

 

Reset and haven't had the code again yet.
When it warms up and the snow clears I will do some testing between the stock filter and the AFE drop in dry filter.
I seamed to get the code at 75-80mph on the highway so I will test between for that as well to see if I get the code vs not.

 

The screen in the pics is my ultra gauge. It displays various information like engine temps, exhaust temps, torque, mpg, rpm, etc. Also will show and can clear trouble codes when the check engine light comes on. It is not a programmer. They run around $50 and are cheap way to find out what the check engine light is without the visit to toyota.

 

I took the pic after I shut off the engine. It was warm. Code displayed after driving around a bit and then hitting the highway around 75mph.
Did not get the trouble code at all today.
I do have the Hypertech interceptor programmer that is installed inline with the MAF. That could have caused the MAF to drop out for a sec. Not sure.
No engine problems at all. No loss of power that is associated with the MAF being dirty or not functioning properly.