diff --git a/src/main.rs b/src/main.rs
index a10dfe8..5817cd6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -41,13 +41,17 @@ pi::process_image! {
         pub running: (X, 200, 0),
         pub faulted: (X, 200, 1),
         pub state: (X, 200, 2),
+        pub pressure_ok: (X, 200, 3),
     }
 }
 
 fn program(inp: Pii, mut out: PiqMut, now: profirust::time::Instant) {
     let now = u64::try_from(now.total_millis()).unwrap();
 
-    let running = inp.want_run() && (*out.running() || inp.bpb1());
+    let pressure_ok = inp.bpb1() && (*out.pressure_ok() || !inp.want_run());
+    *out.pressure_ok() = pressure_ok;
+
+    let running = inp.want_run() && (*out.running() || *out.pressure_ok());
     let mut faulted = *out.faulted() && running;
     *out.pza1_orange() = faulted;
     *out.pza1_blue() = !running && !faulted;