P1617 - Insufficient voltage of supply 1

What does P1617 mean?

This error indicates that the voltage supplied to a specific part of the ECU (supply 1) is too low. Insufficient voltage can prevent the ECU from operating correctly.

• Weak or discharged battery
• Poor electrical connection
• Faulty alternator or charging system

Click steps to track your progress.

1. 1

   Check the vehicle's battery voltage and charge if necessary.

2. 2

   Inspect all power and ground connections for the ECU.

3. 3

   Verify the charging system is functioning correctly.