diff --git a/firmware/controllers/engine_cycle/rpm_calculator.cpp b/firmware/controllers/engine_cycle/rpm_calculator.cpp
index 327512b813..517c7dd725 100644
--- a/firmware/controllers/engine_cycle/rpm_calculator.cpp
+++ b/firmware/controllers/engine_cycle/rpm_calculator.cpp
@@ -365,9 +365,11 @@ void initRpmCalculator(Logging *sharedLogger DECLARE_ENGINE_PARAMETER_SUFFIX) {
 	INJECT_ENGINE_REFERENCE(&ENGINE(rpmCalculator));
 
 	logger = sharedLogger;
+#if ! HW_CHECK_MODE
 	if (hasFirmwareError()) {
 		return;
 	}
+#endif // HW_CHECK_MODE
 
 	// Only register if not configured to read RPM over OBD2
 	if (!CONFIG(consumeObdSensors)) {