|
|
01-27-2018, 06:52 AM | #1 |
Drives: Yaris 2008 RS Join Date: Apr 2013
Location: Montreal, Canada
Posts: 17
|
EVAP leak detected?
Lately, and more in the winter, when I start my Toyota Yaris 2008 HB's engine, there's a quite strong gas smell inside the car. It eventually goes away when on the road.
I have the following DTCs: P043E Evap Leak Detection Reference Orifice Low P043F Evap Leak Detection Reference Orifice High P2401 EVAP System Leak Detection Pump Control Circuit Low P2402 EVAP System Leak Detection Pump Control Circuit High P2419 Evaporative Emission System Switching Valve Control Circuit Low I remember to have been told by a mechanic that some gasket at some point in the exhaust system (I think, maybe it's another system) is broken and needs to be replaced. Would you know which gasket he was talking about, considering the above symptoms? |
01-27-2018, 08:07 AM | #2 |
Drives: 2015Yaris, Son's car, 10 Prius Join Date: May 2010
Location: Texas
Posts: 182
|
He was probably taking about the "donut" gasket off of the exhaust manifold. Which is nothing to do with your problem. Once you get your EVAP system serviced, to avoid failure again, do not top off your tank when gassing up. Topping off causes many a failure of the EVAP system.
|
01-28-2018, 09:17 AM | #3 |
Drives: Yaris 2008 RS Join Date: Apr 2013
Location: Montreal, Canada
Posts: 17
|
Hmm I might have done this in the past, yes.
I also sometimes fill the tank while the engine is running. Is this bad practice? What do you think IS the EVAP issue here? I know this has many components and pipes, but how topping off could cause a permanent issue like a leak? If I get this donut gasket fixed, what's the problem with having an EVAP leak, except for pollution? |
01-28-2018, 03:10 PM | #4 | |
Drives: 2015Yaris, Son's car, 10 Prius Join Date: May 2010
Location: Texas
Posts: 182
|
Quote:
As far as you EVAP failure, it will cause worst mileage which may clog your Catalytic converter which are quite expensive. The reason topping off is bad as it floods your EVAP system. |
|
01-28-2018, 04:06 PM | #5 |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
|
The gas smell in the cabin is likely caused by the doughnut gasket after the exhaust manifold.
Sent from my SM-G930W8 using Tapatalk |
01-28-2018, 05:08 PM | #6 |
Drives: Yaris 06 - 5dr hatchback Join Date: Aug 2015
Location: Birmingham, UK
Posts: 390
|
The EVAP system is about emissions control. Stopping hydrocarbon vapors from getting released into the atmosphere. It stores the fuel vapors from the petrol tank in a charcoal canister. When the vehicle is running periodically the solenoid valves in the system will open and the vapors will be drawn down the lines from the canister into the intake manifold and burnt off in the engine. If you can smell vapors in the cabin like that your vehicle might be running a little rich. Might be an idea to get it sorted. Also i don't know about the law on vehicle inspections in Quebec but it would probably fail its MOT on emissions here in the UK with those sort of issues.
The doughnut gasket on your exhaust is a fairly common issue on the Yaris. I replaced the one on my cousins Yaris last year. I managed to get an aftermarket doughnut for about £7.
__________________
- Yaris 2006, 1.0, 5 door hatchback "Betty" - 240,000 miles UK to Nordkapp in a Yaris
|
01-28-2018, 11:50 PM | #7 |
Drives: Yaris 2008 RS Join Date: Apr 2013
Location: Montreal, Canada
Posts: 17
|
I read on other threads that aftermarket donut gaskets won't fit and that I should get one from Toyota.
Is this true? What parameter should I check when looking for the part? Could all those EVAP DTCs exist because my fuel tank cap is bad somehow? |
01-29-2018, 12:42 AM | #8 |
Drives: Yaris 06 - 5dr hatchback Join Date: Aug 2015
Location: Birmingham, UK
Posts: 390
|
I have a genuine Toyota one in my exhaust because the exhaust is OEM. I used an aftermarket one on my cousins car because it had a rusty aftermarket exhaust on.
If the fault was due to a loose petrol cap the car would probably set either: P0442 - EVAP small leak detected P0445 - EVAP large leak detected Your codes seem to relate to circuit faults detected in the system. Could be anything from a bad solenoid valve, an actual circuit fault like bad wiring or corrosion in a wiring connector or a fault with the ECU. Sent from my SM-G930F using Tapatalk
__________________
- Yaris 2006, 1.0, 5 door hatchback "Betty" - 240,000 miles UK to Nordkapp in a Yaris
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
My Echo Exhaust Leak in Front ? | frank2005 | General Yaris / Vitz Discussion | 8 | 08-02-2017 08:52 PM |
Red Angel Stop Leak - Need Advice | Boba Ben | DIY / Maintenance / Service | 2 | 07-20-2017 09:36 PM |
Yaris Hatch Leak Finally Fixed | Yari$ | DIY / Maintenance / Service | 2 | 07-09-2017 09:43 PM |
New question evap canister replacement | Rutherford | DIY / Maintenance / Service | 3 | 02-06-2014 01:16 PM |
NEED ENGINE CHECK LIGHT CODE LIST | Attitude | Forced Induction Forum | 12 | 04-11-2011 06:38 PM |