The engine C1739 Code has many explanations but real meaning is necessary to know for solving the car engine problem. The general meaning of the code is C for Chassis Code Problem is controller area network wiring bus and modules. 1 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 3 for Cruise Control Servo Indicates Low and 9 for Kick-Down Switch Failed Short. Parts or components is not necessary to be replaced with position to only a engine code C1739 DTC. The car service manual should be checked for more information on conceivable causes of the liability, along with obligatory difficult.