Subaru OBD-II 1996 & Newer models DTC P1516 – Idle Air Control Solenoid Signal 4 Circuit Low Input
DTC P1516 meaning on Subaru OBD-II 1996 & Newer models
DTC P1516 indicates that the Idle Air Control (IAC) solenoid signal 4 circuit has a low input in Subaru vehicles compliant with OBD-II standards from 1996 onwards.
Subaru OBD-II 1996 & Newer models DTC P1516 symptoms
- Engine stalling at idle
- Rough idling
- Decreased engine performance
- Check Engine Light (CEL) illuminated
Subaru OBD-II 1996 & Newer models DTC P1516 causes
- Faulty Idle Air Control (IAC) solenoid
- Wiring issues in the IAC solenoid circuit
- Corrosion or poor connections in the circuit
- ECU (Engine Control Unit) malfunction
Subaru OBD-II 1996 & Newer models DTC P1516 seriousness
The seriousness of DTC P1516 lies in the potential for engine stalling and rough idling, which can affect the drivability and performance of the vehicle. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1516 on Subaru OBD-II 1996 & Newer models
- Use an OBD-II scanner to retrieve the trouble codes and confirm the presence of DTC P1516.
- Inspect the wiring and connections related to the Idle Air Control (IAC) solenoid for any visible damage or corrosion.
- Test the IAC solenoid for proper functionality using a multimeter.
- Check the ECU for any signs of malfunction that may be causing the low input signal.
How to fix DTC P1516 on Subaru OBD-II 1996 & Newer models
- Replace the faulty Idle Air Control (IAC) solenoid if it is determined to be the cause of the low input signal.
- Repair or replace any damaged wiring or connectors in the IAC solenoid circuit.
- If the ECU is found to be faulty, it may need to be reprogrammed or replaced by a qualified technician.
How to erase DTC P1516 on Subaru OBD-II 1996 & Newer models
- After addressing and fixing the underlying issue causing DTC P1516, use an OBD-II scanner to clear the trouble codes from the ECU memory.
- Ensure that the repair has been successful by driving the vehicle and monitoring for any recurrence of the code.
Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics
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Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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