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Mike D
Verified Member of PLANETNAUTIQUE
- Jul 2018
- 2
- Atlanta
- G23
#1
Diagnostic Message
The following diagnostic message warning showed up on my 2014 G23: DTC 134: EGO1 open / lazy SPN 3217 FMI 5.
Any idea on what the issue is?
Attached Files
Tags:None
dklauer
Verified Member of PLANETNAUTIQUE
- Aug 2017
- 10
- South Bend, IN
#2
See AlsoCummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4747 PID: SPN: 3217 FMI: 20 Aftertreatment Intake Oxygen Sensor- Data Not Rational- Drifted High - EcuForce TruckCummins ISB6.7 CM2350 (2013-17) Fault Code: 4747 PID: SPN: 3217 FMI: 20 Aftertreatment Intake Oxygen - Data Not Rational - Drifted High. An In-range High Failure Has Been Detected. - EcuForce TruckCummins ISB6.7 CM2350 (2013-17) Fault Code: 4747 PID: SPN: 3217 FMI: 20 Aftertreatment Intake Oxygen - Data Not Rational - Drifted High. An in-range high failure has been detected. - dtctruckCummins X15 CM2450 X124B (2018 & Newer) Fault Code: 4747 PID: SPN: 3217 FMI: 20 Aftertreatment Intake Oxygen Sensor- Data Not Rational- Drifted High - dtctruckSame code just came up on mine....what did you find out?
Comment
wakerider107
Verified Member of PLANETNAUTIQUE
- Jul 2011
- 271
- south
#3
This code is definitely over my head, but here is the explanation.
Attached Files
2012 SANTE 230
Comment
Mike Fenton
Verified Member of PLANETNAUTIQUE
- Apr 2017
- 71
- Addis, Louisiana
- 2014 G23
#4
Originally posted by dklauerView Post
Same code just came up on mine....what did you find out?
Did you get yours fixed.. I had this same code over the weekend. Im thinking its the o2 sensors.
Comment
dklauer
Verified Member of PLANETNAUTIQUE
- Aug 2017
- 10
- South Bend, IN
#5
My alternator broke off so that was the issue....got it fixed and all good!
Comment
charlesml3
1,000 Post Club Member
- Jan 2008
- 2430
- Lake Gaston, NC
- 2022 G23
#6
Originally posted by dklauerView Post
My alternator broke off so that was the issue....got it fixed and all good!
That makes no sense whatsoever. Your alternator broke off? Did it somehow kill the O2 sensor when it did?
Comment
dklauer
Verified Member of PLANETNAUTIQUE
- Aug 2017
- 10
- South Bend, IN
#7
Yes, it disconnected the sensor connection when it broke off. The two metal bolts literally sheered off from the engine block and the belt came off. We got two screws put it back on and the warning was still up because we didn't connect the sensor. Connected the cord and warning light went off and all good.
Comment
charlesml3
1,000 Post Club Member
- Jan 2008
- 2430
- Lake Gaston, NC
- 2022 G23
#8
OK but that's a very corner case. I've never even heard of an alternator shearing off the bolts.
It is highly unlikely this is the same problem that Mike D is describing. Most likely he either has a bad O2 sensor or a connection to it.
Comment
mpost
- Jun 2007
- 133
- Monticello, MN.
- 98 SN GT40
#9
Originally posted by charlesml3View Post
OK but that's a very corner case. I've never even heard of an alternator shearing off the bolts.
It is highly unlikely this is the same problem that Mike D is describing. Most likely he either has a bad O2 sensor or a connection to it.
https://www.planetnautique.com/vb5/f...nator-bolt-zr6
Broken alternator Bolt ZR6 - PlanetNautique Forums
https://www.planetnautique.com
Well, my first outing was ruined by a broken alternator bolt. Everything started fine, idled for a good 20 minutes. Once, I got on plane, I heard a strange
1998 SN GT40
84 2001 Ski Nautique (sold)
Monticello MN.Comment
Boostwake
- Jan 2024
- 3
- Eildon victoria
- 2013 super air nautique g23
#10
So, in simple terms where is this sensor situated in the boat ,is it doing any damage,and where do I get one?
Comment
jpwhit
Senior Member of PLANETNAUTIQUE
- Aug 2016
- 417
- Cary, NC
- 1998 Ski Nautique2012 Nautique 2002014 MasterCraft X25 . 2019 MasterCraft ProStar
#11
The sensor is screwed in the Exhaust Manifold / Catalytic converter assembly. There are 4 sensors in total, two in each manifold. On each side, there is one before the catalytic converter and one after the catalytic converter. The one before is used to control the engine's fuel mixture. The one after is to verify the proper functioning of the catalytic converter and is essentially only an emission control device to notify if the catalytic converter is not functioning.
If the one before the catalytic converter is not working property, it can result in damage to the catalytic converter. That's because if the O2 sensor is not functioning, the ECM defaults to a generic fuel mixture map which will be a little rich to assure the engine isn't damaged from running overly lean. The extra fuel will burn in the catalytic converter and generate extra heat and can burn up the catalytic converter. You don't want to do that, because they are very expensive,
Comment
jpwhit
Senior Member of PLANETNAUTIQUE
- Aug 2016
- 417
- Cary, NC
- 1998 Ski Nautique2012 Nautique 2002014 MasterCraft X25 . 2019 MasterCraft ProStar
#12
You can see the before catalytic O2 sensor in this picture. It's the silver thing that looks like a spark plug with a black wire going to it on the front of the left side exhaust manifold / catalytic converter assembly.Attached Files
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