diff --git a/car.capnp b/car.capnp
index 9181e01..1ecbfd2 100644
--- a/car.capnp
+++ b/car.capnp
@@ -189,6 +189,7 @@ struct CarState {
   stockFcw @31 :Bool;
   espDisabled @32 :Bool;
   accFaulted @42 :Bool;
+  carFaultedNonCritical @47 :Bool;  # some ECU is faulted, but car remains controllable
 
   # cruise state
   cruiseState @10 :CruiseState;