Check Engine Light Due to EVAP System Fault on Toyota Echo

Problem Description and Possible Solution

The Check Engine Light may illuminate due to an evaporative emission (EVAP) system fault. Our technicians tell us these EVAP system faults can be difficult to diagnose but it is not uncommon to find a failed charcoal canister or a loose or worn gas cap.

Problem Data
RepairPal Verified
Average mileage: 131,681 (50,000–256,400)
6 model years affected: 2000, 2001, 2002, 2003, more2004, 2005
37 people reported this problem
Viewing 1 - 12 of 12 comments
check engine light keeps coming on - haven't had it fully diagnosed yet and/or repaired - 1st time was the gas cap O-ring.
Mechanic thought it was the evap in the engine and replaced a small part. Reset and the light came on within a day.

He ran the diagnostic again and sent it for a smoke test.

Came back that it needs a charcoal cannister. They don't do it in aftermarket so the part is going to run about $300 on its own, plus the smoke test plus installation etc.

I also need a ball joint replaced so I'm looking at about $1000! (BRUTAL)
Tightened gas cap and started and stopped engine several times. Check engine light went off. After several days check engine light is back on. Replaced gas cap. Light still on.
crack in rubber hose atfer evap valve by air cleaner /sometimes did not set code but would not go into readly-ness mode so i could to to smog station
lights been on for a while but I just got it checked because i need regd and smogged here in NV. What a pain ! Gotta get it fixed before i get pulled over again cause they wont register my car with a check engine light problem here.