Subaru OBD-II 1996 & Newer models DTC P1511 – Idle Air Control Solenoid Signal 1 Circuit High Input
DTC P1511 meaning on Subaru OBD-II 1996 & Newer models
DTC P1511 indicates that there is a high input signal detected in the Idle Air Control (IAC) solenoid circuit 1 of a Subaru vehicle equipped with OBD-II from 1996 onwards.
Subaru OBD-II 1996 & Newer models DTC P1511 symptoms
- Engine idling irregularly or at a higher RPM than normal
- Engine stalling at idle
- Check Engine Light (CEL) illuminated on the dashboard
Subaru OBD-II 1996 & Newer models DTC P1511 causes
- Faulty Idle Air Control (IAC) solenoid
- Short circuit or open circuit in the wiring related to the IAC solenoid
- Corrosion or poor connection in the IAC solenoid circuit
Subaru OBD-II 1996 & Newer models DTC P1511 seriousness
The seriousness of DTC P1511 lies in the potential for drivability issues such as erratic idling or stalling. Ignoring this code can lead to poor engine performance and increased fuel consumption.
How to diagnose DTC P1511 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to retrieve the trouble codes and freeze frame data
- Inspect the wiring and connectors related to the IAC solenoid for any visible damage or corrosion
- Test the IAC solenoid for proper operation using a multimeter
How to fix DTC P1511 on Subaru OBD-II 1996 & Newer models
- Replace the faulty Idle Air Control (IAC) solenoid
- Repair any damaged or corroded wiring in the IAC solenoid circuit
- Ensure proper connection and secure mounting of the IAC solenoid
How to erase DTC P1511 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to clear the trouble codes from the vehicle’s memory
- Ensure that the underlying issue causing DTC P1511 has been resolved before clearing the code
Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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