will 172.205(b) put my truck out of service
No. Our inspection records show a 0.0% out-of-service rate for 172.205(b) violations across all-time citations. This code is not OOS-eligible under FMCSA rules. While the national average OOS rate across all FMCSR codes is 31.4%, this particular violation does not trigger immediate vehicle impoundment. You can continue operating, but you must address the underlying compliance issue to avoid escalation or repeat citations.