2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 87Get this manual
1A-23 Engine General Information and Diagnosis:
DTC "C12" (P0335): CKP Sensor Circuit Malfunction
Detected condition and possible cause Detected condition The signal does not reach ECM for secor more, after receiving the IAP sensor input signal
B933H21104010
Possible cause Metal particles or foreign material being stuck on the CKP sensor and rotor tip CKP sensor circuit open or short CKP sensor malfunction ECM malfunction