Hyundai DTC P1516 – Idle air control {lAC) valve – coil 2 – signal malfunction
DTC P1516 meaning on Hyundai
DTC P1516 indicates a signal malfunction in the Idle Air Control (IAC) valve coil 2 of a Hyundai vehicle. The Engine Control Module (ECM) detects this issue, which can affect the engine’s idle speed control.
Hyundai DTC P1516 symptoms
Symptoms of DTC P1516 on a Hyundai may include:
- Irregular or unstable idle speed
- Engine stalling at idle
- Potential rough idling
- Check Engine Light (CEL) illuminated on the dashboard
Hyundai DTC P1516 causes
Common causes of DTC P1516 on a Hyundai can include:
- Malfunctioning Idle Air Control (IAC) valve
- Faulty wiring or connections related to the IAC valve coil 2
- Issues with the ECM or related control circuits
Hyundai DTC P1516 seriousness
The seriousness of DTC P1516 on a Hyundai lies in its potential to affect the engine’s idle control, leading to drivability issues such as stalling or rough idling. It is recommended to address this DTC promptly to prevent further complications.
How to diagnose DTC P1516 on Hyundai
To diagnose DTC P1516 on a Hyundai, follow these steps:
- Use a diagnostic scanner to retrieve the trouble codes stored in the ECM.
- Inspect the wiring and connections related to the IAC valve coil 2 for any damage or loose connections.
- Test the IAC valve for proper operation and resistance.
- Check the ECM and related control circuits for any faults.
How to fix DTC P1516 on Hyundai
To fix DTC P1516 on a Hyundai, consider the following actions:
- Replace the faulty Idle Air Control (IAC) valve if necessary.
- Repair or replace any damaged wiring or connections related to the IAC valve coil 2.
- If the ECM is determined to be the issue, consider reprogramming or replacing it.
How to erase DTC P1516 on Hyundai
To erase DTC P1516 on a Hyundai:
- Use a diagnostic scanner to clear the trouble codes stored in the ECM.
- Ensure that the underlying issue causing the DTC has been resolved before clearing the code.
- Perform a test drive to confirm that the DTC does not reappear.
Recommended tools for Hyundai diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.