scjfly

Hey guys,

Hoping someone has seen this or can point me in the right direction.

On cold mornings, after engine start I get a check engine light and 10 codes. I can then erase them and be fine for a while but it will happen again on another random cold morning.

They always show up in the same order and the same code is repeated several times.



Here are the codes I pull when this happens.

P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low

P043E Catalyst Temp Sensor Circuit Low (Bank 2 Sensor 2)

P043F Catalyst Temp Sensor Circuit High (Bank 2 Sensor 2)

P2402 Evaporative Emission System Leak Detection Pump Control Circuit High

P2419 Evaporative Emission System Switching Valve Control Circuit Low

P043E Catalyst Temperature Sensor Circuit Low (Bank 2 Sensor2)

P043F Catalyst Temperature Sensor Circuit High (Bank 2 Sensor2)

P2401 Evaporative Emission System Leak Control Circuit Low

P2402 Evaporative Emission System Leak Detection Pump Control Circuit High

P2419 Evaporative Emission System Switching Valve Control Circuit Low

Thanks in advance for any info....

scjfly

Follow up to engine codes. First replaced the fuel cap but the codes came back within a few engine starts. Finally bit the bullet and ordered a charcoal/vapor canister from autozone and that appears to have fixed the problem.

I decided to go with the Autozone part. It might be of lesser qualitly than the Toyota part but was cheaper and came with a lifetime warranty. The part showed up and had the official Toyota symbol on the side along with airtex/wells info. Looks like it might be the same one I would have got at the dealership anyway.

ToyoTech559

help more if you post up what year and model vehicle you have

its not common to have evap and cat code as they are not related to each other.

scjfly

2005 SR5 4Runner V6 1grfe 120,000 miles