P1340 igniter circuit malfunction

searched around, and keep finding P1340 showing Cam position sensor,
.
But mine came up as #8 igniter circuit malfunction. I replaced all 8 coils, and plugs. After disconnecting the battery negative. Code was cleared by battery disconnect.
.
Started it up runs way better, 30-45 minutes down the road the cel comes back on, I scan it, and again it’s P1340 igniter circuit malfunction no 8.
.
Truck is running great, but CEL is still on. Do I need to drive it awhile for it to reset? Or should it go away right after repair?

 

Update digging around online I found someone else that had this issue, and it ended up being the drivers side cam position sensor. Wire came out of the retainer, and rubbed the against the serp belt only enough mine has electrical tape, and seems to have also popped off the retainers. Original owner used electrical tape. Going to start there lol any suggestions would be awesome

 

Thanks for the update on the repair.

 

Seems there may be quite a few people stumped by this. There was a TSB for this specifically, new sensor has a protective strap old one does not.
.
Common for clips to snap, and wire get rubbed, also common for wire to get damaged doing the water pump. I ordered a new one, and am going to wait til Monday to tear into it. I’ll post some pics when I get it off, and a comparison of the 2 sensors new vs old

 

So the Cam Position Sensor will be here today. Hoping this is what it is. If not I will be testing resistance readings everywhere.
.
Has anyone else had error P1340, scanned to be the igniter circuit malfunction #8, and why does it show up as this when the universal code says Cam position sensor?

 

Well I got the Cam sensor in today, and got the old 1 off lol drained about 1.5 gallons of coolant.
.
Old sensor appears to have been damaged at some point. White wire had a butt connection and the frayed ground wire looked like it was poking in the connector.
.
Not sure if me doing the timing belt just caused it to finally give up or not. Code is cleared going to take her for a drive, and hopefully that was the issue!
.
New part is the revised part that’s supposed to correct the p1340 issue!
.
.

 

Yikes. Ummm, the last pic... was that the condition or did you cut open the insulation to investigate?

 

Yeah it appears it was misrouted during a previous service possibly coming in contact with the serpentine belt. I had an idea it was in bad shape because the oem insulation was covered in black electrical tape. When I removed the tape that’s what I found

 

I believe I have this same exact issue after changing my timing belt. Did this fix your issue? Also, are the special service tools really required?

 

There are a few things you can screw up while changing the timing belt. Damaging the cam position or crank position sensor wires because you didn't secure it properly is one of those things: https://www.tundras.com/threads/crackhead-resurrection.94083/page-16#post-2405141

 

Does this wire rub on the serp belt or the timing belt behind the cover? I need to make sure mine is secured properly but if I have to pull a bunch of stuff off it might not be worth the effort.

 

On 2UZ, it's the serp belt for crank position sensor. @Tundra2 can confirm with his case. PHM found her crank position harness was also rubbed through and I believe suspected PO's prior TB change is what resulted in it.

Wanna have some fun? The issue of no-starts with same crank position sensor rub-thru is a hilariously long list. https://www.google.com/search?q="timing"+"crank+position"+wire+rubbed+tundra

 

Yes, this. Fortunately for me, my wiring was only rubbed on the sensor side of the connector, and not the engine harness which would have been bad like in the link posted above for Shmeather. Those wires are shielded also from magnetic interference if memory serves so its a really big deal if the engine side of the harness is rubbed through.

 

I see. I need to take a gander at mine then and make sure it's all tucked out of the way. Would hate to have to deal with that on the trip.

 

Just finding this post had the CEL come on again today.
Iv been chasing P0335 for a while know and now I have P1340 also. Looks like the bulletin above might be my fix. I changed the cranshaft position sensor and I thought that fixed my issue. CEL light was off for a week.

should I go OEM or Denso ?