Fault Codes/Caterpillar Inc./1371-040Caterpillar Inc.1371-040UnclassifiedGeneralWhat This Code MeansImproper engine coolingPossible Causes•Operating vessel in shallow or dirty water•Sea water strainer pluggingSuggested Actions1Check the sea water strainer for plugging2Inspect the sea water strainer more frequently if the vessel is being operated in water which is shallow or dirty3Refer to the OEM recommendations for more information about inspecting and cleaning the sea water strainerRelated Caterpillar Inc. Fault Codes1371-0701453-0401152-5357400-5351078-5351078-0111064-5711063-0401052-04081 O/U50/5146Browse all Caterpillar Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 1371-040 on your specific Caterpillar Inc. unit — cited to the OEM manual, not a forum guess.Your question about 1371-040GET THE ANSWERFree account required — we'll bring your question with you.