2006-2009 Suzuki LT-R450 Service Manual, Page 174Get this manual
FI SYSTEM DIAGNOSIS
"C21" (P011 O-HL) IAT SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION C21 Output voltage is not within the following range 0.2 ::;;; Sensor voltage4.8 Sensor voltage is higher than specified valueSensor voltage is lower than specified valuePOSSIBLE CAUSE
IAT sensor circuit open or short IAT sensor malfunction ECM malfunction IAT sensor circuit open or ground circuit open IAT sensor circuit shorted to ground
IAT sensor