Error 13 Rear 02 Inactive

[Tama]

Good evening everyone,
I write from Italy, Tuscany.
I own a 2008 Buell XB12S with EBR ECU, K&N filter and Remus exhaust.

On the highway the engine light came on.
I connected with Buelltooth and the reported error is number 13 Rear O2 Inactive.

I therefore replaced the lambda probe with a new one from Bosch F00HL00311.
I had quite a ride and the light never came on, the only thing I noticed was the cooling fan coming on repeatedly (the day wasn't that hot).

Returning to the motorway, as soon as I exceeded 120 kmh, the warning light came on again.
As soon as I got home I connected with ECMSpy and the error continues to be O2 Sensor.

Do you have any advice? What could it be?

Thanks everyone for the support

 

[Cooter]

You can use the same ECMSpy you have, to see what your O2 sensor is doing.

 

[Barrett]

This board has a lengthy history of new members signing on, posting difficult intriguing questions such as yours, and then after receiving help, lacking the most minimal common courtesy to even reply with a basic "thank you". Respond that you are legit and monitoring your own initiated thread and I will tell you the circumstances that cause FC#13...numerical values to analyze for proper O2 activity check...solutions and steps to resolve the problem and clear out the historicals. Till then............

 

[Tama]

Hi Barrett,
I totaly agree with you. It's easy to ask for help but it's hard to reply thanks!
The same happens when something goes wrong and we are immediately ready to criticize, but it is difficult to compliment when things are going well.
This is my first time posting on this forum.
I hope to receive your help and do the same if anyone needs it.
This is the right way.

 

[Barrett]

ALL XB FAULT CODE #13 INFO AS FOLLOWS:
Indicators are stored active/historical FAULT CODE #13....Constant CEL warning indicated....Occasional flashing CEL indicated.

If you're checking ECM active data and see O2 sensor voltage at or below 0.41 volts, you have a LEAN combustion condition
If you're checking ECM active data and see O2 sensor voltage at or above 0.56 volts, you have a RICH combusition condition
Check the stored O2 sensor data. See info below AS IT PERTAINS TO YOU AND YOUR NEWLY INSTALLED 02 SENSOR

CAUSES CAN AND WILL INCLUDE 1 OR MORE OF THE BELOW:
Loose corroded battery terminals and cable ends
Cracked corroded negative battery cable
Negative battery cable corroded and/or loose at the frame spar end to include corroded frame spar to frame attachment point
One or more of your factory grounds is compromised. They are: left vertical engine brace....dog-bone braided wire....negative battery cable....main harness to frame spar left and right side wires....ECM ground wire. REMOVE CHECK CLEAN INSTALL ALL
Faulty O2 signal wire plug attachment
Chafed broken O2 signal wire
Loose exhaust header-to-cylinder head attachment points
Cracked exhaust header
Crack in vicinity of exhaust header O2 sensor bung
Failing fuel pump

Check O2 signal voltage as mentioned above PLUS AFV values. If AFV substantially above 100% and O2 voltage at or below 0.41 as listed above...it is absolutely a failing fuel pump.

Good luck

 

[Tama]

Really thank you Barrett,
I will check in the weekend and I let you know.
I'm new in ECMSpy, I don't know where is "ECM active data O2 sensor voltage".
I try to find it.
I will check the cable, but I don't know where is all the cables listed by you.
I will check crack.
I don't know where is "O2 signal voltage as mentioned above PLUS AFV values" but I will try.
I hope to not have problem with fuel pump.

Thank you so much again

 

[motoguy]

ALL XB FAULT CODE #13 INFO AS FOLLOWS:
Indicators are stored active/historical FAULT CODE #13....Constant CEL warning indicated....Occasional flashing CEL indicated.

If you're checking ECM active data and see O2 sensor voltage at or below 0.41 volts, you have a LEAN combustion condition
If you're checking ECM active data and see O2 sensor voltage at or above 0.56 volts, you have a RICH combusition condition
Check the stored O2 sensor data. See info below AS IT PERTAINS TO YOU AND YOUR NEWLY INSTALLED 02 SENSOR

CAUSES CAN AND WILL INCLUDE 1 OR MORE OF THE BELOW:
Loose corroded battery terminals and cable ends
Cracked corroded negative battery cable
Negative battery cable corroded and/or loose at the frame spar end to include corroded frame spar to frame attachment point
One or more of your factory grounds is compromised. They are: left vertical engine brace....dog-bone braided wire....negative battery cable....main harness to frame spar left and right side wires....ECM ground wire. REMOVE CHECK CLEAN INSTALL ALL
Faulty O2 signal wire plug attachment
Chafed broken O2 signal wire
Loose exhaust header-to-cylinder head attachment points
Cracked exhaust header
Crack in vicinity of exhaust header O2 sensor bung
Failing fuel pump

Check O2 signal voltage as mentioned above PLUS AFV values. If AFV substantially above 100% and O2 voltage at or below 0.41 as listed above...it is absolutely a failing fuel pump.

Good luck

Barrett,

Thank you for the thorough diagnostics list. My '06 recently started acting up with the 13 code. It seems to act up after a period of steady-state 3500-4k rpm running. Usually a solid red light but I've had it flash a couple of times and I've had a couple of "sputtering / missing" instances.

Hopefully it'll be one of these wiring / grounding issues instead of an actual O2 sensor.

I've still got an AFV of 110 even after the fuel pump replacement last year. It used to stay around 115 before the fuel replacement, so I may have an intake seal leak as well. I'm curious to see what the 02 reading is.

 

[Barrett]

Yes Sir my pleasure. And for what it's worth Buell tuning manuals state "An Adaptive Fuel Value" between numbers 90 and 110 is normal off idle and in steady run state".
Pretty rare I see failed O2 sensors. Closely check for cracks and loose components and fasteners entire exhaust system....closely check that the rubber air horn adapter that connects the TB to the air box base plate is PERFECTLY installed. They are very tricky.

 

[motoguy]

CAUSES CAN AND WILL INCLUDE 1 OR MORE OF THE BELOW:
Loose corroded battery terminals and cable ends

Checked. Inspected and tightened. Positive battery terminal was slightly loose. Not wiggling or anything, but I less snug than I normally get them. This is likely my culprit, IMO.

Cracked corroded negative battery cable

Checked. Negative cable appears to be in good condition. I disconnected both ends and ran a wire rush over both ends to clean it. Dielectric grease applied at reinstallation.

Negative battery cable corroded and/or loose at the frame spar end to include corroded frame spar to frame attachment point

I completely removed the negative battery cable. I hit both ends of it with a handheld wire brush as well as the the ring terminals of the other cables that were connected with it. I also brushed the subframe attachment point where they bolt in. Applied dielectric grease to all terminals and reinstalled. I did the same to the ground point in front of the negative battery cable, where 3 smaller black terminals are bolted to the subframe. Removed, terminals cleaned, dielectric applied, reinstalled.

One or more of your factory grounds is compromised. They are: left vertical engine brace

Which one is this? Are you referring to the dogbone near the right footpeg on the bike, which laterally places the engine? Or are you referring to one of the mounts from the V brace in front (to include the dogbone / lateral brace there)? Or a different place altogether?

....dog-bone braided wire....

Removed, wire brushed ends, bolts, contact surfaces of both the frame/engine as well as the dogbone and braided wire. dielectric applied, reinstalled and retorqued.

negative battery cable....

Mentioned above. Cleaned

main harness to frame spar left and right side wires....

I'm not sure what you are referencing here. The 2 wire bundles that attach at the bolt on the front of the headstock / behind the headlight? If so I removed, wire brushed (terminals and surfaces) an re-installed with dielectric grease. If you're referring to something else, can you help me determine where they're located?

ECM ground wire.

I still need to find / clean this one, unless it happens to be one of the 3 smaller wires grounded in front of the main negative cable.

REMOVE CHECK CLEAN INSTALL ALL
Faulty O2 signal wire plug attachment

Will unplug and check connector, apply dielectric grease and reinstall.

Chafed broken O2 signal wire

Wire appeared to be intact and in good condition. Could be an internal break I guess.

Loose exhaust header-to-cylinder head attachment points
Cracked exhaust header
Crack in vicinity of exhaust header O2 sensor bung

All appear ok.

Failing fuel pump

Has only a few hundred miles on a Revision Moto fuel pump replacement, but this is a possibility. My AFV is showing 110 or so (was 115 prior to pump replacement), and I have note replaced the intake seals yet.

Check O2 signal voltage as mentioned above PLUS AFV values. If AFV substantially above 100% and O2 voltage at or below 0.41 as listed above...it is absolutely a failing fuel pump.

When do I check the 02 sensor readings? Cold, hot, while riding, etc? I've got a Buelltooth that's handy for such things, but I'm not sure when is the appropriate time to check.

Thanks for all the help. I'm thinking my not-fully-tightened positive battery lead may be the culprit, but while I've got the bike down I'd like to take care of all these other possible ground points as well.

 

[Barrett]

Nicely done and documented. Your answers:

Ground wires in vicinity of headlight/flyscreen NOT related to O2 operation or readings

02 values established at normal operating temps and closed loop operation

3 small wires you mentioned at negative cable frame end and frame spar attachment are all grounds including ECM

Left vertical engine brace is large bar from engine case to frame attachment point

 

[motoguy]

Left vertical engine brace is large bar from engine case to frame attachment point

I apologize for the repeated questions. I'm not purposefully trying to be dense, but trying to clarify. Are you referring to this mount (the dogbone part):



or this mount?



Those are the only mounts I can think of (aside from the front V bar or the front dogbone from the engine to the V bar).

These are all of the engine mounts I can recall (rear isolator / mount not pictured), with one of these going to the V bar.

 

[motoguy]

02 values established at normal operating temps and closed loop operation

Ok, thank you! Sounds like I'll need to check that when I get back home after a ride. Or maybe leave the Buelltooth hooked up during a ride and check it that way.

3 small wires you mentioned at negative cable frame end and frame spar attachment are all grounds including ECM

Good deal! I can scratch the ECM ground off the list then. Thanks again for all the info.