Error Code 21 -No Ignition Signal

[MasterJdoggy]

Hey all,

I was hoping someone may know or can point me in the right direction i have done a search over the forums but didnt get much in return. I was drive the other day and this is the first time ever the car has missed a beat the engine light came on but after getting home any hooking the seach tool I have and error code 21 - No Ignition Signal (Ign Signal-Primary) and I have no idea what this really mean. The car runs normal before and after the light comes on and start first time every time till this day.

As I drove it the follow day and the warning didnt come back up so I was think maybe it have a hick up but than drove her the following day after and 10 minutes into the drive she displayed the engine light warning.(same error) did the same again to night

I don't know what other details to give you but if anyone has any idea would be great.

[QWK32]

most common cause of error code 21 is failing coilpacks. you may not notice them breaking down until they get worse. the CAS can also cause the ignition 21 error code but this isn't as common.

[MasterJdoggy]

Well that's Just great....... I had been thinking about getting new one soon but not right now as trying to save for another house.

Thanks for this trip I'll let it run and see what other may say as well..

[BMX666]

My C34 started doing that the day after got it. Very intermittently. But when the light came on it'd run like a pig. I checked the code with a paperclip and got 21. Did some research, replaced the coilpacks, and it's still going strong nearly 9 months later. I got Yellowjacket coilpacks delivered to my door for $420 and put them in myself. It's not that hard, just a little fiddly and I'm no mechanic. Took me 3 hours from start to finish. I checked the plugs while I had the coilpacks out too.

[KiwiRS4T]

If there is no money in the budget for coilpacks just now you can do the quick fix - pull the coilpacks out and spray them with insulating material - there are a few threads with suggestions - and pull your plugs out and replace them if necessary but in any case gap them down to 0.8mm.

BTW I just bought a set of brand new OEM coilpacks for AU$400 off ebay - going fine in my car now - I think ke is an SAU members but doesn't currently have a lsiting.

[Tangles]

Id suggest Selleys #401 hi-temp industrial strength silicone sealant (+ corking gun to apply) from your local hardware store for under $20.

Layer it around the coilpacks to stop breakdwon / wasted spark. Will get you by for a fair while

[BensDR30]

If there is no money in the budget for coilpacks just now you can do the quick fix - pull the coilpacks out and spray them with insulating material - there are a few threads with suggestions - and pull your plugs out and replace them if necessary but in any case gap them down to 0.8mm.

BTW I just bought a set of brand new OEM coilpacks for AU$400 off ebay - going fine in my car now - I think ke is an SAU members but doesn't currently have a lsiting.

Snap,

I have just bought a set from Adam HERE for my S1 and it's all good.

[pipster11]

If there is no money in the budget for coilpacks just now you can do the quick fix - pull the coilpacks out and spray them with insulating material - there are a few threads with suggestions - and pull your plugs out and replace them if necessary but in any case gap them down to 0.8mm.

BTW I just bought a set of brand new OEM coilpacks for AU$400 off ebay - going fine in my car now - I think ke is an SAU members but doesn't currently have a lsiting.

self amalgamating tape is the go now apparently

kinda looks like tape, but its made of rubber

[MasterJdoggy]

Hey thanks all I'll give that a go as I would like that car running to do a few runs down Eastern Creek strip in the next 2 week as we have booked the strip for the day to play around on it.

[hollypopx]

Sorry to dig this up! but did you have any luck from replacing the coils? having the exact same issue not missing etc have replaced 2 coils that were not genuine nissan parts and the engine light is still on don't really want to replace the other 4 if it was something else!

Thanks

[BigDirtyJase]

Hey Hollypopx

Best thing to do is to reset the ECU to clear the fault codes and test.

I had this same fault code a while ago....it was easier for me to replace the all the coilpacks (and it would come out to be cheaper in the long run)

Now you can go for the quick fix and do what Tangles has suggested but after a while they will eventually break down...you have to remember they would have been in the car since day 1 and they don't last forever

[533 RYC]

It could also be the coilpack harness. These fail also. They are around $80 new.