No or Low Tach reading, no code

[GraniteRam2015]

My 2015 1500 Hemi has started to either have no reading on the Tach or it reads 100-200 rpm at idle. No check engine codes or driving issues.

I’m curious if anyone knows if this may be an indication something is about to fail?

Regards,

 

[Bills86e]

check for intake manifold leak(s), coil paks.

 

[jws123]

Is it really idling low? or do you think the tac is reading wrong?

 

[crash68]

Use an OBD reader app to verify the actual rpm reading, I'm guessing something the dash cluster is causing the problem.