ETS Throttle Motor Malfunction
2016-2020 Kia Optima 2.4L I4
Description
The PCM has detected a malfunction in the Electronic Throttle System throttle motor. The motor that physically moves the throttle plate is not responding correctly to PCM commands, which severely limits engine power.
Symptoms
- Check Engine Light
- Severe loss of power
- Engine limited to idle speed
- ETC warning light illuminated
- Throttle unresponsive to pedal input
Common Causes
- Faulty throttle body motor
- Internal throttle body failure
- Wiring damage to throttle body motor
- Corroded throttle body connector
- PCM motor driver circuit failure
Diagnostic Steps
- Test throttle body motor resistance
- Command throttle opening with scan tool and observe response
- Inspect throttle body connector and wiring
- Check for binding throttle plate
- Verify PCM motor drive signals
Repair Notes
Replace the electronic throttle body assembly if the internal motor has failed.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1118 on Other Vehicles
Common Questions
What does code P1118 mean on a 2016-2020 Kia Optima?
P1118 stands for "ETS Throttle Motor Malfunction". The PCM has detected a malfunction in the Electronic Throttle System throttle motor. The motor that physically moves the throttle plate is not responding correctly to PCM commands, which severely limits engine power.
What are the symptoms of P1118 on a Kia Optima?
Common symptoms of P1118 include: Check Engine Light, Severe loss of power, Engine limited to idle speed, ETC warning light illuminated, Throttle unresponsive to pedal input.
What causes P1118 on a 2016-2020 Kia Optima?
Common causes of P1118 include: Faulty throttle body motor, Internal throttle body failure, Wiring damage to throttle body motor, Corroded throttle body connector, PCM motor driver circuit failure.