How do I fix my P2509 code?
How do I fix my P2509 code? What repairs can fix the P2509 code?Repair or replace blown fuse.Repair or replace faulty fusible link.Repair or replace faulty circuits.Repair or replace faulty battery.Repair or replace faulty battery cables.Repair or replace faulty PCM relay.Replace and reprogram PCM. What does Engine code P2509 mean? If you're using an OBD-II scanner to find out why your check engine light is on, a P2509 code means that your engine's electric signal to the ECM is intermittent rather than constant. As a result, the ECM is not getting the steady power supply from the battery it needs...