P1508moderate severityPowertrain
IAC Valve Closing Coil Circuit Short
on 2017 Hyundai Tucson 2.0L I4 · FWD
What this code means
The PCM has detected a short circuit in the IAC valve closing coil circuit. This may cause the idle to drop too low or the valve to behave erratically.
Symptoms
- Check Engine Light
- Low or erratic idle
- Engine stalling
- IAC valve buzzing
Common causes
- IAC closing coil internally shorted
- Wiring short to ground in closing coil circuit
- Damaged connector
- Water intrusion
- Chafed wiring
Diagnostic steps
- Test IAC closing coil resistance (abnormally low indicates short)
- Inspect wiring for damage or chafing
- Check connector for water or corrosion
- Disconnect IAC and measure circuit resistance to ground
- Swap IAC valve and retest
Repair notes
Replace the IAC valve if the closing coil is shorted; repair wiring if the short is in the harness.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1