Codes p043e, p043f, P2401, P2402 and P2419.

Tiny
ARCADIA007
  • MEMBER
  • 2009 TOYOTA RAV4
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I got the check engine repair codes p043e, p043f, p2401, p2402, and p2419. These are stored in permanent memory without a check engine light.

I also got the same codes with a check engine light. I replaced the evap canister assembly, erased the codes. The same errors came back a few days later with the check engine light.

Was there something I missed?
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Saturday, October 9th, 2021 AT 11:04 AM

3 Replies

Tiny
KENNY K
  • EXPERT
When you replaced the assembly, can you let us know what was included in this assembly? Was there a part number of what you replaced?

Here is a guide that will help with this system as it may help to be familiar with this if you are not:

https://www.2carpros.com/articles/how-emission-control-systems-work

I am attaching the info on all these codes but the fact that you have all of them, I am going to suspect there was an issue with wiring or the module.

Clearly having clogged and high flow codes points to a control module issue.

Take a look at this info and then let us know what part you replaced, and we will most likely be able to determine what we need to do from that.

Thanks
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Saturday, October 9th, 2021 AT 11:52 AM
Tiny
ARCADIA007
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Fuel Evaporative Canister Filter - Fuel, Tank, Body - OEM Toyota Part # 7770642010

This is what was replaced. It was a new part, not used.
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Saturday, October 9th, 2021 AT 12:16 PM
Tiny
KENNY K
  • EXPERT
So that appears to be not only the canister but the pump module, and leak detection pump.

If that is the case, if these codes return after you clear them and drive the vehicle then I suspect this is an ECM issue at this point.

Basically, what happens is when you shut the engine off, the ECM watches this emissions system to try and make sure the pressure builds when it is sealed to make sure there are no leaks. It checks this at certain times, and it expects to see a certain pressure. If the pressure and time don't line up, then it sets these codes.

However, the fact that it is setting all of them points to a control issue.

If you think about it, how can it have high flow and a blocked orifice at the same time? Also, the leak detection pump is stuck on and off?

You can run through the testing but if it were me and you already replaced this assembly, I would be putting an ECM on it based on this info.
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Saturday, October 9th, 2021 AT 3:17 PM

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