DTC P3190: Poor Engine Power; DTC P3191: Engine does not Start; DTC P3193: Fuel Run Out: Description

From the power management control ECU, the ECM receives data such as power output required for the engine (required output), estimated torque produced by the engine (estimated torque), engine speed of control target (target speed), and whether the engine is in start mode or not. Then, based on the required output and target speed, the ECM calculates a target torque that is to be produced by the engine and compares it with the estimated torque. If the estimated torque is very low compared with the target torque, or the engine start mode continues for the specific duration calculated by the coolant temperature, an abnormal condition is detected.

DTC No.	DTC Detection Condition	Trouble Area
P3190	Following conditions continue at a fixed engine speed or a fixed length of time (1 trip detection logic): Communication with power management control ECU is normal Engine speed is a fixed value or more Engine start mode is not active Target torque is a fixed value Ratio of estimated torque against target torque is less than 20%	Intake system Throttle body assembly Fuel pressure Engine Mass air flow meter sub-assembly Out of fuel Engine coolant temperature sensor Crankshaft position sensor Camshaft position sensor EGR valve assembly ECM
P3191	Following conditions continue at a fixed engine speed or a fixed length of time (1 trip detection logic): Communication with power management control ECU is normal Engine speed is a fixed value or more Engine start mode is active Engine start no-determination for 100 engine revolutions or more, and 6 seconds or more	Intake system Throttle body assembly Fuel pressure Engine Mass air flow meter sub-assembly Out of fuel Engine coolant temperature sensor Crankshaft position sensor Camshaft position sensor EGR valve assembly ECM
P3193	Fuel low level signal input into ECM (1 trip detection logic):	Out of fuel ECM