P1191 HYUNDAI, KIA: ELECTRONIC THROTTLE SYSTEM LIMP START VALVE ON
POST UPDATED IN February, 2023
P1191 HYUNDAI, KIA: ELECTRONIC THROTTLE SYSTEM LIMP START VALVE ON
The ETS (Electronic Throttle System) is composed of a control unit, a motor, the APP Sensor (Accelerator Pedal Position), the Throttle Position Sensor (TPS), and a Limp start valve.
In the case of the Limp Start Valve, it is connected under the throttle body and its essential function is to help air to pass from the outside, through this valve, into the combustion chamber of the engine. This action prevents the vehicle from stalling when erratic ETS operation is detected.
P1191 OBD2 fault code is a code used by Hyundai and Kia manufacturers to signal that the engine RPM has been detected to be below 470, resulting in a potential “limp start” mode.
The reasons for setting the P1191 OBDII diagnostic code are:
The steps to follow to correct the DTC P1191 OBD2 code are: