My ECU still has trouble codes, idle issues, and is not communicating or starting:
Trouble Codes, also known as soft codes, can be stored in the vehicle's PCI Bus if the removal of the battery and ECU were done incorrectly.
If the vehicle’s battery was not disconnected prior to removing the unit, it may inadvertently blow a fuse along the wiring behind the dash, a relay near the fuse box, or a fuse in one of the multiple fuse boxes in the vehicle. This will cause the PCI Bus to store the soft codes.
Check for blown fuse
Replace fuse if blown
The fastest and easiest ways to clear soft codes in the vehicle is to do a simple battery reset:
Disconnect the battery cables
Clamp the battery cables together with the terminals touching (off the battery!)
Leave the cables clamped in this position for 15-20 minutes and then re-install
*This should clear any soft codes and communication issues with the vehicle’s PCI Bus.*
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