IAC Valve Opening Coil Circuit Short
2015-2021 Kia Sedona 3.3L V6
Description
The PCM has detected a short circuit in the IAC valve opening coil circuit. This can cause the IAC valve to remain energized or draw excessive current, affecting idle speed control.
Symptoms
- Check Engine Light
- Erratic idle speed
- High idle speed
- IAC valve overheating
Common Causes
- Short to ground in IAC opening coil wiring
- IAC valve internal coil short
- Chafed wiring contacting ground
- Connector with bridged pins
- Water intrusion in connector
Diagnostic Steps
- Test IAC opening coil resistance (low reading indicates short)
- Inspect wiring for chafing or damage
- Check connector for bridged pins or water intrusion
- Disconnect IAC and test circuit resistance to ground
- Replace IAC valve and retest
Repair Notes
Replace the IAC valve if shorted internally; repair wiring if the short is 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
P1506 on Other Vehicles
Common Questions
What does code P1506 mean on a 2015-2021 Kia Sedona?
P1506 stands for "IAC Valve Opening Coil Circuit Short". The PCM has detected a short circuit in the IAC valve opening coil circuit. This can cause the IAC valve to remain energized or draw excessive current, affecting idle speed control.
What are the symptoms of P1506 on a Kia Sedona?
Common symptoms of P1506 include: Check Engine Light, Erratic idle speed, High idle speed, IAC valve overheating.
What causes P1506 on a 2015-2021 Kia Sedona?
Common causes of P1506 include: Short to ground in IAC opening coil wiring, IAC valve internal coil short, Chafed wiring contacting ground, Connector with bridged pins, Water intrusion in connector.