Codes p043e, p043f, P2401, P2402 and P2419?

ROJITO

MEMBER
2010 TOYOTA MATRIX
1.8L
4 CYL
2WD
AUTOMATIC
187,600 MILES

I had various warning lights come on about 6 months ago. (Check engine, VSC blinking, Traction control) I read that the first thing to try and remedy was to replace the gas cap since that is fairly inexpensive. I did so and the warning lights went away until last week. They are back. I purchased a car scanner to see what codes it would show and those 5 in the subject line are showing. Should I just take it to a shop?

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

This is an easy EVAP leak and pump problem,

P043e Code: Evaporative Emission System Leak Detection
P043F Evap Leak Detection Reference Orifice High
P2401 EVAP control circuit has had a fault with the leak detection pump
P2419 Evap System Switching Valve Control Circuit Low.

I would raise the car up and follow the EVAP system lines to see if one is off or has a hole in it, if not I would replace the charcoal canister (leak detection pump) and then clear the codes, please check out the images below to help you fix the problem. Please let me know.

Images (Click to make bigger)