2015 QX80 Turned Off while driving

[errece]

Hi everyone,

Just experienced today our 2015 QX80 just turned off while pulling into a parking lot, no lights on the dash, no messages, no stutter, no previous indications of any issues, just went off. Switched the gear to Parking and started again like nothing had happened, moved to Drive and off I went to the parking spot.

It has 100,000 miles, just came out of the dealership where everything was checked to be ok, the transmission fluid was recently replaced.

I'm trying to rule out possible issues like fuel pump or fuel filter, I would assume I would have some stuttering if it was related to these maybe, or if it's a spark plug maybe some missfire or dark smoke. I did the self diagnosis when I got home and went through the cycle as normal, except it showed Headlight System Error when the cycle started, the lights worked but when the diagnosis was complete the message was never displayed again. The way it just turned off makes me think of an electrical problem, maybe a short somewhere and the ECU reacted to it.

Additional info, I was just starting to turn the wheel when it turned off, not sure if it can be related to a steering problem.

Any input on what to check would be greatly appreciated.

[VStar650CL]

Cam and crank sensors are the perpetual prime suspects for unexplained stalls on anything Nissan.

[errece]

Cam and crank sensors are the perpetual prime suspects for unexplained stalls on anything Nissan.

Thank you so much,

If these fail so much would it make sense to try some aftermarket brands or just stick with originals?

Just to double check, could you confirm if the sensors are the ones shown on the picture? how painfull is it to reach and replace the crankshaft one?

[VStar650CL]

Yep, those should be the right places. You should visit InfinitiPartsDeal.com and plug in your VIN to confirm the numbers. I don't recommend aftermarket for Hall sensors on Nissan products, but if you do, stick strictly with the Japanese brands, NGK/NTK, Denso, Hitachi, etc. I can't begin to tell you how much hair I've seen pulled out over the years because of cheap aftermarket CMP's and CKP's.

[errece]

Yep, those should be the right places. You should visit InfinitiPartsDeal.com and plug in your VIN to confirm the numbers. I don't recommend aftermarket for Hall sensors on Nissan products, but if you do, stick strictly with the Japanese brands, NGK/NTK, Denso, Hitachi, etc. I can't begin to tell you how much hair I've seen pulled out over the years because of cheap aftermarket CMP's and CKP's.

Excellent, Thank you so much for sharing your wisdom

[VStar650CL]

You're most welcome! Keep us all posted on how it goes.

[errece]

You're most welcome! Keep us all posted on how it goes.

Will do, but I probably won't know if it's fixed for a while since the failure is so random and only happened once, probably won't notice any difference other than never happening again.

If this was your own vehicle, which one would you replace first? or you would go ahead and replace all 3 sensors? I'm in Canada and shipping from the US is crazy high from that site, I need to find them in the country but looks like they're very expensive on most canadian sites.

Would this failed sensor show up if I plug in a scanner?

[VStar650CL]

I'd try the crank first, both cams if that doesn't do it. The problem with spotty CKP's and CMP's is that they usually don't leave any evidence. When they "flatline" you get a code, but when they simply "miss teeth" on the reluctor wheel the result is an unexplained stall or misfire. RockAuto shows a Denso 1964005 or NTK EC0188 are equivalent parts for the CMP's, you could try googling those. The CKP is a little harder to find, but this OEM one is about $112 C including shipping (Glendale, AZ). It might be gray market, but that doesn't usually mean anything with electronics parts.

[VStar650CL]

Aargh, guess I missed pasting the link:
https://www.ebay.ca/itm/304194073394

[errece]

Aargh, guess I missed pasting the link:
https://www.ebay.ca/itm/304194073394

This price makes more sense, $128 CAD shipped, the cheapest I found on a canadian site for a Denso was $249 + tax and shipping.

[errece]

I'd try the crank first, both cams if that doesn't do it. The problem with spotty CKP's and CMP's is that they usually don't leave any evidence. When they "flatline" you get a code, but when they simply "miss teeth" on the reluctor wheel the result is an unexplained stall or misfire. RockAuto shows a Denso 1964005 or NTK EC0188 are equivalent parts for the CMP's, you could try googling those. The CKP is a little harder to find, but this OEM one is about $112 C including shipping (Glendale, AZ). It might be gray market, but that doesn't usually mean anything with electronics parts.

Hi, just wanted to give a quick update:

My QX80 stalled one more time since my post, completely died on a traffic light just when it turned green and I let go of the brakes to accelerate, so I got home a few minutes later and placed the order.

I ordered the crankshaft sensor from www.partsouq.com found them on ebay but it's cheaper to order from their website. Placed the order last friday June 24th, it arrived today June 29th, from Dubai to Edmonton so very happy with that, much faster than the 2 weeks from the Infiniti dealership.

I just installed the sensor now fingers crossed I don't have any more problems.

Thanks again for your help

[adamruiz2001]

I'd try the crank first, both cams if that doesn't do it. The problem with spotty CKP's and CMP's is that they usually don't leave any evidence. When they "flatline" you get a code, but when they simply "miss teeth" on the reluctor wheel the result is an unexplained stall or misfire. RockAuto shows a Denso 1964005 or NTK EC0188 are equivalent parts for the CMP's, you could try googling those. The CKP is a little harder to find, but this OEM one is about $112 C including shipping (Glendale, AZ). It might be gray market, but that doesn't usually mean anything with electronics parts.

Hi, just wanted to give a quick update:

My QX80 stalled one more time since my post, completely died on a traffic light just when it turned green and I let go of the brakes to accelerate, so I got home a few minutes later and placed the order.

I ordered the crankshaft sensor from www.partsouq.com found them on ebay but it's cheaper to order from their website. Placed the order last friday June 24th, it arrived today June 29th, from Dubai to Edmonton so very happy with that, much faster than the 2 weeks from the Infiniti dealership.

I just installed the sensor now fingers crossed I don't have any more problems.

Thanks again for your help

Just bumping this to the top, did your fix hold? was the problem the crankshaft sensor?

[errece]

Hi, it did not, I replaced the crankshaft sensor and did not improve, keeps stalling. I tried cleaning the injectors and nothing, I recently got a P0420 code, not sure if related. Not sure what to change to try to fix it, $200 CAD per sensor replacement is not going to work. It hasn't stalled all the way to shut off but it idles low and you might see some lights coming on on the dash and the the idle picks up, it feels like it's about to die and then comes back

[adamruiz2001]

Hi, it did not, I replaced the crankshaft sensor and did not improve, keeps stalling. I tried cleaning the injectors and nothing, I recently got a P0420 code, not sure if related. Not sure what to change to try to fix it, $200 CAD per sensor replacement is not going to work. It hasn't stalled all the way to shut off but it idles low and you might see some lights coming on on the dash and the the idle picks up, it feels like it's about to die and then comes back

When was the last time you replaced your plugs? Could be as simple as a really bad or weak spark. I would start with simple things, change your plugs, inspect all coils (replace as needed). P0420 is sometime fuel related or even CATs. But if running lean, could point back to spark. Hopefully you can get this figured out. Good Luck

[errece]

Thank you.

Yes, the spark plugs are on my list, the vehicle is just over the 100k miles so due for a change in plugs. I agree that it could be a simple fix, that's why I tried with maybe cleaning injectors. Fingers crossed.

[LSHK]

Hello,
I have identical problem with EX35. The car just shuts down randomly while driving. I've been searching the posts but haven't seen any definitive solutions. Were you able to identify and fix the problem?

[errece]

Hello,
I have identical problem with EX35. The car just shuts down randomly while driving. I've been searching the posts but haven't seen any definitive solutions. Were you able to identify and fix the problem?

No fix yet, I've replaced Spark plugs, the crank sensor, and the Upstream O2 Sensor but still has issues. My next replacement would be the injectors to see if that helps, not sure if it could be on the fuel suppply side. I'm still getting a P0420 code sometimes 2 in a day, and then 2 weeks of no codes. I noticed the idiling problem is worst on the second or subsequent starts on the day or when the engine's already hot.

[VStar650CL]

No fix yet, I've replaced Spark plugs, the crank sensor, and the Upstream O2 Sensor but still has issues. My next replacement would be the injectors to see if that helps, not sure if it could be on the fuel suppply side. I'm still getting a P0420 code sometimes 2 in a day, and then 2 weeks of no codes. I noticed the idiling problem is worst on the second or subsequent starts on the day or when the engine's already hot.

Have you replaced the intake cam sensors? Those are much more likely culprits for an intermittent stall than anything in the fuel system. In light of the P0420, you might also take a mallet to your bank1 cat and see if anything rattles. Cats that are disintegrating can cause weird intermittent symptoms.

[errece]

Have you replaced the intake cam sensors? Those are much more likely culprits for an intermittent stall than anything in the fuel system. In light of the P0420, you might also take a mallet to your bank1 cat and see if anything rattles. Cats that are disintegrating can cause weird intermittent symptoms.

I just ordered the two cam sensors, I'll replace these and let you know if it works.

I'll try the mallet idea, who doesn't like hitting things with a hammer?

[2000Telly]

Did u fix the problem for cutting off.

[errece]

Did u fix the problem for cutting off.

I replaced the Cam sensors as suggested and did not fix the issue. With the new sensors is not as bad, it used to stutter a lot and even shut off a couple of times, but still does the stutter, seems like it recovers faster, but I have not driven the QX80 enough lately.

Feels like the injectors could be my next replacement to see if it helps.

[JusWild]

I was driving on the highway and while using the adaptive cruise control my 2015 qx80 stalled and I lost throttle response. I went to a fuel station topped off the fuel and used an injector cleaner fluid then the car would not crank at all no lights no response nothing. I had some corrosion on the battery terminals. Cleaned that but the QX80 was running really rough. I checked alt output and it was 13.1v which is low I know. I grabbed a code reader from work and saw it has multiple codes. Running rich, multiple misfires, misfire on 2 and 6 cylinder. I replaced the plugs and coils but that didn’t change anything. Anyone have any thoughts or suggestions?

[VStar650CL]

Your QX has "smart charging" so the 13.1V, means the system might be doing "dumb charge", which is sadly pretty common on the Armada/QX80. However, getting nothing at all after your gas stop suggests the battery terminals are far gone and the low voltage may be because the alternator voltage isn't reaching the battery. Try some new terminals first.

[JusWild]

Could the charging issue cause misfires?

[VStar650CL]

Sure. If the voltage goes low enough the ECM will start seeing ghosts. It can cause any damn thing.