Lexus
IS300
20

Check Engine Light Due to EVAP System Failure on Lexus IS300

Problem Description and Possible Solution

Occasionally, the Check Engine Light is illuminated due to failures in the evaporative emission (EVAP) system. Our technicians tell us that proper diagnoses is generally required to confirm the exact fault causing the warning light to come on.

Problem Data
RepairPal Verified
Average mileage: 140,581 (89,123–185,000)
5 model years affected: 2001, 2002, 2003, 2004, more2005
20 people reported this problem
Comments
Viewing 1 - 6 of 6 comments
check engine light on displaying p0440, p0446
I have check Engine light problems since last 11/2 years. Change sensor in Tank, gas cap, and recently changed charcoal canister. Light wasn't there for last 10 days and now same problem starts again.......
Checked system & code read EVAP System Failure (Small)
MIL/CEL usually comes on and pulls the same code when I am about to run out of petrol.
Both the check engine light and track auto light was on for last year, per Lexus, needed catalytic converter and oxygen sensor replace - $4000 to replace by Lexus
This started happening after a tune-up at a local Meineke. They basically gave up on finding the leak. I've had to play some games to pass inspection (reset ecu, complete a drive cycle, get it inspected prior to light coming back on).