Is violation 393.45 serious?

It is a brakes citation that can result in an out-of-service order depending on severity. Historical violations do not prove a current defect, but they tell you exactly what to verify before buying.

Can I check if a truck's VIN has violation 393.45?

Yes — if the VIN appears in FMCSA roadside records, TruckWhere shows its violations (including codes like 393.45), out-of-service events, and the inspection timeline for that exact VIN.

DOT violations › 393.45

FMCSA Violation 393.45: Brake tubing and hose — leaks or damage

Cited for damaged, leaking, or improperly secured brake tubing and hoses, which can cause air or hydraulic loss.

Last updated: June 2026 · Data sources: NHTSA vPIC (live) and FMCSA public inspection records (periodic refresh).

Quick answer

FMCSA roadside violation 393.45 (brake tubing and hose — leaks or damage) is a brakes citation that can result in an out-of-service order depending on severity. On a used truck, a past 393.45 citation does not prove a current defect — it tells you exactly what to verify before you buy. If the VIN appears in FMCSA roadside records, TruckWhere shows whether it has this or other violations.

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Is 393.45 serious?

This is a Brakes violation. It can result in an out-of-service order depending on severity. An out-of-service order means the vehicle could not continue until the condition was corrected at that time — it does not prove the defect remains today.

What a buyer should ask the seller

Ask whether brake lines/hoses were replaced and inspected for chafing.

What a mechanic should inspect

Inspect all brake lines and hoses for leaks, chafing, kinks, and secure routing.

How 393.45 appears in a TruckWhere report

In a TruckWhere DOT Buyer Report, a 393.45 citation shows up in the roadside timeline with its date, state, unit attribution, out-of-service status, and a plain-English explanation — plus a Brakes entry in repeated-system detection if it occurred more than once.

Check a VIN for 393.45 →

Related brakes violations

393.47 — Brakes out of adjustment / inadequate for safe stopping 393.48 — Inoperative or defective brakes

Learn more

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Frequently asked questions

What does FMCSA violation 393.45 mean?: Cited for damaged, leaking, or improperly secured brake tubing and hoses, which can cause air or hydraulic loss. It can result in an out-of-service order depending on severity.
Is violation 393.45 serious?: It is a brakes citation that can result in an out-of-service order depending on severity. Historical violations do not prove a current defect, but they tell you exactly what to verify before buying.
Can I check if a truck's VIN has violation 393.45?: Yes — if the VIN appears in FMCSA roadside records, TruckWhere shows its violations (including codes like 393.45), out-of-service events, and the inspection timeline for that exact VIN.