Help needed - problem with gear position sensor and DQS (Ducati V4 2018)

Also curious, if this happens again and the dash lights up with traction control, abs lights etc, are those systems shut off? Basically wondering if I can keep riding and shift manually or if I should consider shutting it down because all aids are off.

rja4z3 said:

Also curious, if this happens again and the dash lights up with traction control, abs lights etc, are those systems shut off? Basically wondering if I can keep riding and shift manually or if I should consider shutting it down because all aids are off.

Click to expand...

I think the systems remain active to a certain point - but everything that is gear related shuts off - ABS should work, however DQS shuts off and DTC is in 'safe' mode. The bike is rideable, but I was worried to ride it properly.

As far as the spacers go - I will install them on the new sensor, as this one is already 'fried'. Also I am planning on using a cooler, but I will show pictures and video as soon as the new one arrives.
edit:since we will be manufacturing the spacers, we will decide on material, but I will definitely check out your idea - seems really on-point.

Bai Mityo said:

I think the systems remain active to a certain point - but everything that is gear related shuts off - ABS should work, however DQS shuts off and DTC is in 'safe' mode. The bike is rideable, but I was worried to ride it properly.

As far as the spacers go - I will install them on the new sensor, as this one is already 'fried'. Also I am planning on using a cooler, but I will show pictures and video as soon as the new one arrives.
edit:since we will be manufacturing the spacers, we will decide on material, but I will definitely check out your idea - seems really on-point.

Click to expand...

Are you talking about phenolic (heat shield) spacers that I suggested? Please let us know what happens and what you wound up choosing for the spacers. Thanks.

San

Hello guys,

It has been awhile, but here is the current state of affairs.

From the two sensors ordered the second hand one arrived, and the new 'Ducati' one we are still waiting on.

The second hand one has undergone some modifications in order to help with the heat transfer from the engine. The cooling is done in order to achieve desirable behavior and avoid 'frying the sensor a third time.

So what we did:
We took a CPU cooling radiator, some high quality thermal paste to help with the heat transfer between the sensor and the radiator and we crafted two spacers in order to help with the heat not being transferred directly from the gearbox casing to the sensor.


Here is the sensor with the thermal paste installed:


Here is the sensor with all the 'improvements':





Here is the finished bike improvement (mounted on the bike):


I just returned from a two-day track test with ambient temperature of 38 degrees Celsius (100 Fahrenheit). I am happy to announce that 300 miles later the sensor is still operational and works like a charm!

Also, there was no problem whatsoever with gear detection and indication.

I am not sure if all these precautionary actions are necessary in order to keep it functioning, but what I know is that traveling to a track-day and realizing you can't ride is very unwanted situation for everyone.

I hope this helps someone else too!

Thank you for all the help and community feedback guys. Stay safe!

Bai Mityo said:

Hello guys,

It has been awhile, but here is the current state of affairs.

From the two sensors ordered the second hand one arrived, and the new 'Ducati' one we are still waiting on.

The second hand one has undergone some modifications in order to help with the heat transfer from the engine. The cooling is done in order to achieve desirable behavior and avoid 'frying the sensor a third time.

So what we did:
We took a CPU cooling radiator, some high quality thermal paste to help with the heat transfer between the sensor and the radiator and we crafted two spacers in order to help with the heat not being transferred directly from the gearbox casing to the sensor.


Here is the finished bike improvement (mounted on the bike):

I just returned from a two-day track test with ambient temperature of 38 degrees Celsius (100 Fahrenheit). I am happy to announce that 300 miles later the sensor is still operational and works like a charm!

Also, there was no problem whatsoever with gear detection and indication.

I am not sure if all these precautionary actions are necessary in order to keep it functioning, but what I know is that traveling to a track-day and realizing you can't ride is very unwanted situation for everyone.

I hope this helps someone else too!

Thank you for all the help and community feedback guys. Stay safe!

Click to expand...

The spacers are phenolic, right? If I have this issue the first thing I'll try is just the spacers, then a heat sink if needed. Thanks!

San

Hello oldmansan,

The spacers were cut from a material for gaskets called Klinger I beleive (like this one: https://www.par-group.co.uk/sealing-and-jointing/klinger-gasket-materials/. We did this in order for it not to deform under the severe hot conditions.

A little longer bolts are needed - we used stainless steel, as it is the material with least thermal conductivity, thus protecting the sensor even further.

I hope this helps!

For what it’s worth. From my experience of building high-end overclocked PCs the air gap on the part will act as an insulator and not as a heat exchanger. Thermal pastes are only useful in very tight clearances.
The air gap you created using spacers should significantly help by preventing direct heat transfer.

Bai Mityo said:

Hello oldmansan,

The spacers were cut from a material for gaskets called Klinger I beleive (like this one: https://www.par-group.co.uk/sealing-and-jointing/klinger-gasket-materials/. We did this in order for it not to deform under the severe hot conditions.

A little longer bolts are needed - we used stainless steel, as it is the material with least thermal conductivity, thus protecting the sensor even further.

I hope this helps!

Click to expand...

Thank you Sir!

San

Thank you so much for the pictures and the instructions.

I have a 2019 V4S and I'm facing the same issue on the track with the gear shift sensor not working after it gets heated up. I will try this out and update on the situation.

Thanks again.

Hello all and thank you for the detailed description of what's taking place here. I have a 2019 V4 base with SC Project slip on and I am having the same issue. The first time the QS went out and the speedo wouldn't read anything etc. I took it to the dealer and even shared the information from here to help guide their technician in hopes of saving time.

They ended up clearing all the codes and installed a new QS sensor. While they had it, I have them update the software to the new EVO 2 since I will primarily have the bike on track.

I took the bike out after the repairs and within 10 minutes of being on the bike the ABS square starting flashing red as well as the DTC error and red square of death. RSOD from here on out.

So I attempted to make some modifications myself and add spacers as there were know behind the sensor. I added cooling tape To both sides of the spacer to help slow the heat transfer. I allows the bike to idle and when the sensor and case reached 141 degrees Fahrenheit, the RSOD errors appeared again.

So once these errors show up, if you get things cooled properly will they all stay gone without going to the dealership to have all the errors removed? Clearly my spacers did not work.

Also, if the dealership does a complete reflash with the new Evo software, wouldn't I need plug the upmap back in to flash the map for the slip on?

Sorry for all the questions. I've been reading this forum for weeks as this is my first venture away from Honda's. So I'm completely new to the Ducati world. Other than this issue, the bike is amazing. Can't wait to get this resolved.

Thank you.

2019 v4.. also fried the shifter sensor.. almost new bike.. plus the rear suspension quit, no compression servo function, then ducati told me they won’t warranty the shock., “ too expensive” exact words they used.. this bike is maybe meant to sit on a shelf., not actually be driven,, too many issues..

Jr51 said:

then ducati told me they won’t warranty the shock., “ too expensive” exact words they used

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“Has my warranty expired?”

my 2020 DQS has been intermittent since day 1. Reset ECU at 621 and it helped a little but it’s worse than ever now locking me out of gears up and down.

that fancy rear shock that failed.. u paid extra $$$ for the fancy unit and it needs to be replaced under warranty.
im maxing my V4 miles under warranty, they’re going to be replacing lots of stuff

Bai Mityo said:

Hello oldmansan,

The spacers were cut from a material for gaskets called Klinger I beleive (like this one: Klinger Gasket Materials | Non-Asbestos Materials | PAR Group. We did this in order for it not to deform under the severe hot conditions.

A little longer bolts are needed - we used stainless steel, as it is the material with least thermal conductivity, thus protecting the sensor even further.

I hope this helps!

Click to expand...

i'm new to the v4 platform. bought my 2019 base in March and have done 3 track days - two at COTA, one at MSR Houston. During the second day at COTA (today, coolest of the 3 track days coincidentally), dqs failed on track after 4 laps, CEL was on, and gear indicator showed the dash line . track side ducati tech hooked up to the diagnostic computer and read the codes. GPS failure and injector control unit codes were showing. he suggested they were likely related. cleared the codes but they returned. came here to research and i appreciate the info shared.

any long-term follow-up before i take the bike to ducati Austin?

craig

I had this problem last year and replacing the gear shift sensor seems to have fixed the problem.

rja4z3 said:

I had this problem last year and replacing the gear shift sensor seems to have fixed the problem.

Click to expand...

+1


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Same problem occurred with me twice now on my 2020 V4 base. Both times on track. Gear indicates a dash. The DQS no longer works. Check engine light remains on.
I have already replaced the gear indicator sensor once. Went to another track day. After a few sessions, the sensor failed again and the same symptoms manifested.

Any update on this? Anyone tried to contact Ducati N.A.?

Keet said:

Same problem occurred with me twice now on my 2020 V4 base. Both times on track. Gear indicates a dash. The DQS no longer works. Check engine light remains on.
I have already replaced the gear indicator sensor once. Went to another track day. After a few sessions, the sensor failed again and the same symptoms manifested.

Any update on this? Anyone tried to contact Ducati N.A.?

Click to expand...

Do you have the Ducati sidestand eliminator? These can fail when hot, lighting up your dash and stopping your fun.

Easy check, plug back in the original sidestand sensor. Securely tape a magnet onto it (do it with the ignition on, check the sidestand light goes out). Try a session on track.

RickD996 said:

Do you have the Ducati sidestand eliminator? These can fail when hot, lighting up your dash and stopping your fun.

Easy check, plug back in the original side stand sensor. Securely tape a magnet onto it (do it with the ignition on, check the sidestand light goes out). Try a session on track.

Click to expand...

Hi Rick: Thanks for your response. I did not use the Ducati sidestand eliminator, no. I used the original magnet and for good measure wrapped it with a magnetic tape and safety wired everything tightly. No issue with sidestand light turning on.
I plugged the bike in at the dealership and the error code showed a gear indicator sensor failure. Do you think that the side stand sensor could be caused the gear indicator sensor to fail?

Has anyone considered aftermarket solutions? I believe Translogic makes a plug and play quickshifter sensor that plugs into the OEM sensor receiver. (Translogic Products: OEM Replacement Quickshifter sensors and Quickshifters) has anyone gone this route?

Keet said:

Hi Rick: Thanks for your response. I did not use the Ducati sidestand eliminator, no. I used the original magnet and for good measure wrapped it with a magnetic tape and safety wired everything tightly. No issue with sidestand light turning on.
I plugged the bike in at the dealership and the error code showed a gear indicator sensor failure. Do you think that the side stand sensor could be caused the gear indicator sensor to fail?

Has anyone considered aftermarket solutions? I believe Translogic makes a plug and play quickshifter sensor that plugs into the OEM sensor receiver. (Translogic Products: OEM Replacement Quickshifter sensors and Quickshifters) has anyone gone this route?

Click to expand...

I think the gear position sensor failure is common!

Keet said:

Hi Rick: Thanks for your response. I did not use the Ducati sidestand eliminator, no. I used the original magnet and for good measure wrapped it with a magnetic tape and safety wired everything tightly. No issue with sidestand light turning on.
I plugged the bike in at the dealership and the error code showed a gear indicator sensor failure. Do you think that the side stand sensor could be caused the gear indicator sensor to fail?

Has anyone considered aftermarket solutions? I believe Translogic makes a plug and play quickshifter sensor that plugs into the OEM sensor receiver. (Translogic Products: OEM Replacement Quickshifter sensors and Quickshifters) has anyone gone this route?

Click to expand...

I have the translogic QS and it is really good compared to stock but the biggest change is the evo2 software that fixes the to long a cut time.

That said my gear position sensor failed the the translogic QS installed as well.


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