IAC Valve Closing Coil Circuit Open
2015-2021 Kia Sedona 3.3L V6
Description
The PCM has detected an open circuit in the IAC valve closing coil. Without the closing coil functioning, the IAC valve cannot reduce airflow to lower idle speed when needed.
Symptoms
- Check Engine Light
- High idle speed
- Idle speed does not decrease when warmed up
- Engine races at idle
Common Causes
- Broken wire in IAC closing coil circuit
- Corroded IAC connector pins
- Faulty IAC valve with open closing coil
- PCM connector corrosion
- Wiring harness damage
Diagnostic Steps
- Test IAC closing coil resistance
- Inspect IAC connector for corrosion
- Check wiring continuity from PCM to IAC closing coil
- Verify PCM output to closing coil
- Compare opening and closing coil resistances
Repair Notes
Replace the IAC valve if the closing coil is open internally; repair wiring or connector if external.
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
P1507 on Other Vehicles
Common Questions
What does code P1507 mean on a 2015-2021 Kia Sedona?
P1507 stands for "IAC Valve Closing Coil Circuit Open". The PCM has detected an open circuit in the IAC valve closing coil. Without the closing coil functioning, the IAC valve cannot reduce airflow to lower idle speed when needed.
What are the symptoms of P1507 on a Kia Sedona?
Common symptoms of P1507 include: Check Engine Light, High idle speed, Idle speed does not decrease when warmed up, Engine races at idle.
What causes P1507 on a 2015-2021 Kia Sedona?
Common causes of P1507 include: Broken wire in IAC closing coil circuit, Corroded IAC connector pins, Faulty IAC valve with open closing coil, PCM connector corrosion, Wiring harness damage.