P1508high severityPowertrain
Idle Air Control Valve Circuit Open
on 2000 Acura RL 3.5L V6 · AWD
What this code means
Electrical open circuit in the IAC valve coil.
Symptoms
- CEL
- Very low idle
- Stalling at idle
- Surging 1500-1700 RPM
- Only runs with foot on gas
Common causes
- Faulty IAC valve open circuit
- Damaged wiring
- Corroded connector
- Faulty PCM driver
Diagnostic steps
- Test IAC resistance
- Inspect wiring
- Check connector
- Test PCM output
Repair notes
Replace IAC valve.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1