code P0172, again...

[Dgdecker]

2014 RTS SM-6 @ 3500 miles, taking back to dealer for second time in 6 months for code P0172, last time they changed the purge valve - hope they get to the root cause this time. Planning to take a 1200 mile trip in June and don't want to see check engine light flashing again.

[Chupaca]

The code P0172 refers to bank one running rich. Have not seen that but on the 998 V-twin that has two banks. May be that the triple has three but on the twin we would check the vaccum lines and the o2 sensors to start then on to the injectors etc. Seems they should be able to figure it out but need to hook up to buds for more details...

[Snowbelt Spyder]

That's an unusual code for the triple. Not a lot of history on here. A bad purge valve, however, typically causes a lean condition on any motor, due to the vacuum loss, that is, the sucking in of extra air. They need to be looking at what would cause too much fuel, not too little. The triple has some kind of air temp and pressure sensor on the intake. A fuel injector, fuel pressure, or O2 sensor are always prime suspects. Keep in mind that even if your factory warranty is up, some of these components are covered by the longer warranty on emissions components. Would be interested to hear back from you as to what they try this time.

[billybovine]

P0172 is not the same for a triple as the definition above for the twin.

P0172.jpg

Running too rich. ECM has reached it's limit to reduce fuel. Since the purge valve has already been replaced. I would not blame it again. I would look at the fuel injectors not closing completely. A 2014 with only 3500 miles on it I would think there have been several tanks of old gas been run through it. Time to run some injector cleaner through it and see if that may help.

[Dgdecker]

Well the Spyder (2014 RTS SM6) spent two weeks at the dealer - can't find anything wrong. Tech cleared code and ran motor for 20 minutes-code didn't reappear. Asked BRP, they suggested check spark plugs and fuel pressure - both were ok. BRP said in case response I should only use 87 octane, 10% ethanol maximum - anyone else ever heard this??
So after bringing Spyder home this past Tuesday, 100 miles into today's ride CHECK ENGINE LIGHT comes ON AGAIN. Code P0172, surprises, surprise! So back to the dealer Monday.
Really losing confidence in this bike, I like riding it but......

[Dgdecker]

Well the Spyder (2014 RTS SM6) spent two weeks at the dealer - can't find anything wrong. Tech cleared code and ran motor for 20 minutes-code didn't reappear. Asked BRP, they suggested check spark plugs and fuel pressure - both were ok. BRP said in case response I should only use 87 octane, 10% ethanol maximum - anyone else ever heard this??
So after bringing Spyder home this past Tuesday, 100 miles into today's ride CHECK ENGINE LIGHT comes ON AGAIN. Code P0172, surprises, surprise! So back to the dealer Monday.
Really losing confidence in this bike, I like riding it but......

On theTHIRD trip to the dealer they found that fuel pressure was above spec, so new pump/regulator was installed.

First day on trip to PA, got a few hundred miles and in KY check engine light comes on again, code P0172.... Made appointment with dealer in KY, he checked purge valve, fuel, pressure, and O2 sensor output, all within spec. Tech has seen this before and believes throttle body is defective. Didn't have part on hand, so cleared code and since was running well continued on my trip. Then 3 days later and 300 miles, CHECK ENGINE ON AGAIN, Code P0172. Sent another email to BRP and will go to dealer for 5th repair later this week.

Anyone else have this situation - and how did it get resolved??? Thx.

[carbonation]

Info on cam timing and fuel trim relationship for your enjoyment.
https://www.searchautoparts.com/moto...ility?page=0,2
Back in the day, we would use an offset key on the cam to advance it slightly (one or two degrees, not a whole tooth) for more low end torque. If i read the article correctly, retarding the cam makes it lean, so that makes sense. The waveform check out procedure sounds solid.

[carbonation]

Curiousity engaged on 3 cups of Joe this AM.
It looks like the Walker O2 sensor is a direct substitute, and saves a few bucks.

Walker 932-14062 49.95 Amazon or RockAuto
CanAm 707600872 74.99 Amazon

[siai47]

Well it's been a month and the Spyder has been returned. They again changed the purge valve (this is the second replacement valve), updated the ECM and updated the DPS. They put 30 miles on it and deemed it OK. They dropped off the bike at my home (nice touch) and left. I took it for a ride and got about a block from the house and got a flashing check engine light, the "key" symbol on the dash and a notification that I was in limp home mode. Drove back and tried to see what the code was but upon restart everything seems to have gone away and the vehicle shows no codes in history. Looks like it was unhappy with my key the first time I drove it. Longer ride tomorrow hopefully it won't be stranding me on the freeway.