P1509high severityPowertrain
Idle Air Control Valve Circuit Short
on 2009 Acura MDX 3.7L V6 · AWD
What this code means
Short circuit in the IAC valve coil.
Symptoms
- CEL
- Erratic idle
- RPM bouncing
- Stalling at idle
Common causes
- Faulty IAC valve internal short
- Shorted wiring
- Damaged connector
Diagnostic steps
- Test IAC resistance
- Check for shorts
- Inspect connector
- Test PCM driver
Repair notes
Replace IAC valve.
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