P0625

Symptoms

• The Check Engine light comes on
• Charging voltage is below normal (less than 13.5 V)
• Slow battery discharge when the engine is running
• The battery light on the dashboard comes on
• Reduced lighting brightness under high load

Causes

• Short circuit of terminal F wire to ground
• Voltage regulator malfunction (low signal)
• Open circuit in control circuit with short to ground
• Poor contact in terminal F connector
• Internal ECU malfunction (low output signal)

How to Fix

1. Measure the charging voltage with the engine running
2. Measure the voltage at terminal F of the generator with the engine running.
3. Check terminal F wire for short to ground
4. Check the generator connector - clean the contacts
5. Check the voltage regulator - replace if faulty
6. Measure the ECU output voltage on the control wire

Related codes

Error P0625 by Vehicle Brand