diff --git a/firmware/init/sensor/init_tps.cpp b/firmware/init/sensor/init_tps.cpp
index 93fe3f6d5d..f163d472cd 100644
--- a/firmware/init/sensor/init_tps.cpp
+++ b/firmware/init/sensor/init_tps.cpp
@@ -91,6 +91,12 @@ public:
 	}
 
 	void init(bool isFordTps, RedundantFordTps* fordTps, const TpsConfig& primary, const TpsConfig& secondary) {
+		bool hasFirst = m_pri.init(primary);
+		if (!hasFirst) {
+			// no input if we have no first channel
+			return;
+		}
+
 		{
 			// Check that the primary and secondary aren't too close together - if so, the user may have done
 			// an unsafe thing where they wired a single sensor to both inputs. Don't do that!
@@ -104,8 +110,6 @@ public:
 			}
 		}
 
-		m_pri.init(primary);
-
 		bool hasSecond = m_sec.init(secondary);
 
 		if (isFordTps && fordTps) {