P1190 Possible Causes
- Faulty throttle valve solenoid
- Throttle valve solenoid wiring harness is open or short-circuited
- Poor electrical connection in the throttle valve solenoid circuit
- Faulty engine control module (ECM)
How to Fix Code P1190?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1190 Meaning
The actuation of flaps in the intake passage at the cylinder intake valve can be narrowed. This reduces airflow. The flaps in the intake passage are controlled by the intake throttle actuator. The duty cycle calculation for intake passage cut-off can be turned on and off by the intake passage cut-off function switch. If the engine speed and the low idle speed controller demand quantity exceed certain thresholds, the MAF signal must be above a threshold. If not, the “flap stuck closed” error is recognized. If the engine speed and the control duty cycle exceed certain thresholds, the digital intake passage cut-off switch must be activated. If so, the flap stuck open error is recognized. If the throttle actuator is stuck, engine symptoms will occur: engine stalling while running and failure to start.