Reddit reviews Dorman 911-702 Vapor Canister Purge Valve for Select Mazda Models
We found 3 Reddit comments about Dorman 911-702 Vapor Canister Purge Valve for Select Mazda Models. Here are the top ones, ranked by their Reddit score.
Direct fit replacement unitUnit features Dorman engineered quality enhancementsBacked by Dorman's limited Lifetime Warranty
P0455 is technically a 'Gross EVAP leak or No EVAP flow.' P0401 is low EGR flow, which on this car is measured through the pressure differential between exhaust pressure and manifold pressure. P2187 is lean bank 1.
What these codes tell us, is either you have multiple issues or you have one issue that the computer can't quite put its finger on. Most likely, the Purge Valve (under the hood, not the Canister Vent Valve, by the tank), is leaking. It should normally be closed but is sticking open.
This is probably what you need. To verify, find it under the hood. Unplug it, and the vacuum lines from it and blow through it. If you can, its faulty. Alternatively disconnect just the line that runs back to the firewall, start the car, and see if you can feel suction at the valve with it running.
I can't comment on the consequences, other than suggesting it's not a great idea to drive it hard in this condition.
You can get an aftermarket valve on Amazon quickly for cheap. PLEASE VERIFY this is the right part, but I'm pretty sure it is.
Dorman 911-702 Mazda 6 Purge Valve https://www.amazon.com/dp/B004AIHBR8/
On the Speed either your gas cap is loose or your purge valve solenoid is starting to fail. The solenoids are known to go bad on 1st gen Speeds. It's an easy fix, takes less than 10 minutes to change and the part cost $20.
On the 6 it's probably a dirty throttle body. They get gummed up over time from pcv blow by and EGR valve gases. With enough build up they can get stuck I've seen it first hand. Removing and cleaning is not as hard as you would think. Will take around 30 minutes and all you need is a 10mm socket, ratchet and some rags. You might want to also check your air filter and spark plugs while you're at it.