Control Module Input Power B Circuit/Open

Where it lives

For U3007, the module sits on the circuit this code reports. The description of U3007 reports the module as open.

Check these first

• An open in the control module input power B circuit
• A short to ground or voltage on the input power B wire
• A blown fuse feeding the input power B circuit
• A poor ground that mimics an open input power B

What to do next

1. Read module voltage on a scan tool
2. Check the fuse for the input power B circuit
3. Test the input power B wire for open and short faults
4. Measure voltage at the control module input power B pin
5. Repair the power B circuit or replace the module if it stays open
6. Clear the code and retest

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