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Old 01-04-2020, 07:35 PM #1
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P2441, Secondary Air Injection System Switch Valve Stuck Closed (Bank 1)

In over 11 years of owning my FJ and before I sold with almost 200k miles, never had a code all those years.

Now my 18 4runner Check Engine and Track Off lights were both on at the initial start up. Checked the code and it was P2441, Secondary Air Injection System Switch Valve Stuck Closed (Bank 1).

So I used my scanner to find out what code it was and it was the same code listed 3 times P2441. I erased the code all was well when I start the 4runner but I did noticed that the code was still on the scanner and it noted as Permanent. That was the first time I every saw that on my scanner.

Anyone know what this code is for before I take it into Toyota.
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Old 01-07-2020, 01:31 PM #2
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The FJ didn't have it but on 14+ 4Runners there is an Air injection system as part of the emissions system. Basically it forces fresh air into the exhaust manifold during start up and shut down (that high pitch whine you hear for a second or two). It can be a very expensive system to replace, and if you're under warranty I'd let the dealer take care of it.

Some info about the system.
Air Injection pump mod validity
GX460 Mod
AIR Injection Filter Mod Write-up
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Old 01-07-2020, 06:14 PM #3
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This is a big problem in second gen tacoma. There is a delete kit out there but it has mixed reviews.

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Old 01-07-2020, 06:52 PM #4
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The Air Injection System was so much of an issue on the 2007-2010 Tundra and 2008-2010 Sequoia models, Toyota extended the warranty on related parts. How many miles are on your T4R?
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Old 01-07-2020, 08:26 PM #5
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Quote:
Originally Posted by headpaneer View Post
The Air Injection System was so much of an issue on the 2007-2010 Tundra and 2008-2010 Sequoia models, Toyota extended the warranty on related parts. How many miles are on your T4R?
I haven't call Toyota yet on this issue, I only have 23k miles on it. I believe this should be covered under Emission Warrant.
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Old 01-08-2020, 09:44 AM #6
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I believe to be closed it has to see no voltage, so this could be as simple as a failing sensor or a wiring issue.

Regardless the dealer should step up on this one.
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Old 01-08-2020, 09:15 PM #7
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Quote:
Originally Posted by Friggin Idiot View Post
The FJ didn't have it but on 14+ 4Runners there is an Air injection system as part of the emissions system. Basically it forces fresh air into the exhaust manifold during start up and shut down (that high pitch whine you hear for a second or two). It can be a very expensive system to replace, and if you're under warranty I'd let the dealer take care of it.

Some info about the system.
Air Injection pump mod validity
GX460 Mod
AIR Injection Filter Mod Write-up
I removed the foam filter from the Air Injection a while ago and installed a K&N Filter. This should be covered under the Emission Warranty.
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Old 09-28-2020, 06:25 PM #8
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Question

Hello all,

First time on the forum sorry if I am not in the right place or doing this wrong. Looking for some help with my 2016 SR5 4runner. CEL and A-TRAC came on, initially found P2441 code. Dug a little deeper with OBD2 and found advanced codes.

P2441- Secondary Air injection system switching valve stuck closed Bank 1
P0300 Toyota readiness Random misfire detected
P0011 Toyota readiness Intake Camshaft position – timing-over-advanced (Bank 1)
P0012 Toyota readiness Intake Camshaft position timing-over-retarded (Bank 1)
P0014 Toyota readiness Exhaust Camshaft position timing- over-advanced (Bank 1)
P0015 Toyota readiness Exhaust Camshaft Position Timing – over- retarded (Bank 1)
P0016 Toyota readiness Crankshaft Position Camshaft position Correlation – (Bank1 Sensor A)
P0017 Toyota readiness Crankshaft Position Camshaft position Correlation – (Bank1 Sensor B)
P0018 Toyota readiness Crankshaft Position Camshaft position Correlation – (Bank2 Sensor A)
P0019 Toyota readiness Crankshaft Position Camshaft position Correlation – (Bank2 Sensor B)
P0021 Toyota readiness Intake Camshaft Position Timing – over – advanced (Bank 2)
P0022 Toyota readiness Intake Camshaft Position Timing – over – retarded (Bank 2)
P0024 Toyota readiness Exhaust Camshaft Position Timing – over- advanced (Bank 2)
P0025 Toyota readiness Exhaust Camshaft Position Timing – over – retarded (Bank 2)
P0037 Toyota readiness HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 Toyota readiness HO2S Heater Control Circuit High (Bank1 Sensor 2)
P0101 Toyota readiness Mass or Volume Air Flow Circuit Range/Performance

Has anyone ever seen anything like this before? Any help is greatly appreciated.

Thanks in advance
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Old 09-28-2020, 10:55 PM #9
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Quote:
Originally Posted by Friggin Idiot View Post
The FJ didn't have it but on 14+ 4Runners there is an Air injection system as part of the emissions system.
Not true, the later model years FJs did have it. My '13 had it.
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