TCS+Slip+Error 21

[Ljbyrne98]

So as the title says I have the TCS, Slip and CEL lights on from the second the car starts. The CEL code is error 21. Doing research it appears to be coil packs. I replaced coils with brand new splitfires and replaced the coil loom with a brand new genuine OEM but the light is still there. Can anyone help me figure out what else could be causing the problem? 

 

Car is a 1998 r34 Gtt 

[R34GTTBoi]

Have you cleared the light?

[GTSBoy]

If it's fixed, the light should go away after 10 starts or something anyway.

[Ljbyrne98]

I have started the car many more than 10 times. I've cleared the error with NDS but it instantly comes back. I'm out of ideas here 

[GTSBoy]

Well, with TCS & slip lights on, it would suggest that you have a problem with the TCS.  So a wheel speed sensor, or the TCS throttle position sensor, or similar.  So, take it to a mechanic and put a proper scan tool on it so you can read the codes in that CU.

Edited March 31, 2019 by GTSBoy

[viper2002]

Had the same issue, it turned out to just be the battery. I'd suggest borrowing a battery to see if it goes away for you first.

[Ljbyrne98]

My battery is absolutely cooked so it'd be worth getting a new one but even just then I had it connected to a good battery and the codes are still there so who knows