Subaru OBD-II 1996 & Newer models DTC P1520 – Radiator Fan Relay 1 Circuit High Input
DTC P1520 meaning on Subaru OBD-II 1996 & Newer models
The DTC P1520 on Subaru OBD-II 1996 & Newer models indicates a high input condition in the Radiator Fan Relay 1 Circuit. This means that the Engine Control Module (ECM) has detected an abnormal voltage level in the circuit controlling the radiator fan relay.
Subaru OBD-II 1996 & Newer models DTC P1520 symptoms
Some common symptoms associated with DTC P1520 on Subaru vehicles may include:
- Radiator fan not operating at the correct speed or not turning on
- Engine overheating due to inadequate cooling
- Check Engine Light (CEL) illuminated on the dashboard
Subaru OBD-II 1996 & Newer models DTC P1520 causes
The high input condition in the Radiator Fan Relay 1 Circuit, leading to DTC P1520 on Subaru vehicles, can be caused by various factors, including:
- Defective radiator fan relay
- Faulty wiring or connectors in the radiator fan relay circuit
- Issues with the radiator fan motor
- ECM malfunction
Subaru OBD-II 1996 & Newer models DTC P1520 seriousness
DTC P1520 should be addressed promptly as it can lead to engine overheating and potential damage if the radiator fan fails to operate correctly. Ignoring this issue may result in costly repairs and engine damage.
How to diagnose DTC P1520 on Subaru OBD-II 1996 & Newer models
To diagnose DTC P1520 on Subaru vehicles, a mechanic may perform the following steps:
- Use an OBD-II scanner to retrieve the trouble codes and freeze frame data
- Inspect the radiator fan relay and related wiring for any visible damage or corrosion
- Test the radiator fan relay and motor for proper functionality
- Check the ECM for any signs of malfunction
How to fix DTC P1520 on Subaru OBD-II 1996 & Newer models
To fix DTC P1520 on Subaru vehicles, the following steps may be taken:
- Replace the faulty radiator fan relay if found defective
- Repair or replace any damaged wiring or connectors in the radiator fan relay circuit
- If the radiator fan motor is faulty, replace it with a new one
- If the ECM is malfunctioning, have it repaired or replaced by a qualified technician
How to erase DTC P1520 on Subaru OBD-II 1996 & Newer models
To erase DTC P1520 on Subaru vehicles, you can use an OBD-II scanner to clear the trouble codes stored in the ECM’s memory. Once the issue has been addressed and fixed, clearing the codes will reset the Check Engine Light and turn off the warning indicator on the dashboard.
Recommended tools for Subaru OBD-II 1996 & Newer models diagnostics
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