P1520 – Hyundai DTC

Hyundai DTC P1520 – Alternator – FR terminal malfunction

DTC P1520 meaning on Hyundai

DTC P1520 for Hyundai indicates a malfunction in the Alternator FR (Field Return) terminal circuit. This code is triggered when the Engine Control Module (ECM) detects an issue with the communication or signal from the alternator FR terminal.

Hyundai DTC P1520 symptoms

• Check Engine Light (MIL) illuminated on the dashboard
• Battery warning light may be on
• Irregular charging of the battery
• Electrical system malfunctions

Hyundai DTC P1520 causes

• Defective alternator FR terminal
• Wiring or connection issues in the FR terminal circuit
• Faulty ECM

Hyundai DTC P1520 seriousness

The DTC P1520 code should not be ignored as it can lead to battery charging problems and potential electrical system failures. It is recommended to address this issue promptly to avoid further complications.

How to diagnose DTC P1520 on Hyundai

1. Use a diagnostic scanner to retrieve the trouble codes stored in the ECM
2. Inspect the alternator FR terminal and its wiring for any visible damage or loose connections
3. Check the voltage output of the alternator to ensure it is within specifications
4. Perform a thorough inspection of the ECM and related components

How to fix DTC P1520 on Hyundai

1. Repair or replace any damaged wiring or connections in the alternator FR terminal circuit
2. Replace the alternator if it is found to be faulty
3. If the ECM is diagnosed as the issue, it may need to be reprogrammed or replaced

How to erase DTC P1520 on Hyundai

1. After the repair is completed, use a diagnostic scanner to clear the trouble codes stored in the ECM
2. Ensure that the repair has resolved the underlying issue causing the DTC P1520
3. Perform a test drive to confirm that the code does not reappear