2003 Ford Ranger P0001 P0232 P1000 Fault Diagnosis: Won't Start, Random Shutdowns

My 2003 Ford Ranger with a 3.0L V6 engine (not multi-fuel), manual transmission, is refusing to start. Occasionally, it runs for a few seconds before shutting down unexpectedly. Most of the time, it cranks quickly but still fails to start. Initially, I received OBD2 diagnostic code P1000: 'Ford continuous OBD systems readiness test not complete.' I replaced the battery with no improvement. The issue progressed to P0232: 'Fuel pump secondary circuit high,' indicating a potential fuel delivery problem. Later, the system reported P0001: 'Generic fuel volume regulator control circuit 7 open' — a code that is difficult to locate in standard technical resources or online searches. I recently discovered that power steering fluid spilled on the gas vapor canister purge valve's electrical connector. While I suspect this isn-\'t the root cause, I plan to inspect and clean it tomorrow (no internet access at home). The truck has also been driven on numerous rough roads, which raises concerns about potential wiring harness damage or internal component failure. Given these symptoms and codes, what could be causing the starting issue? Any insights into P0001 circuit 7 or how to troubleshoot this specific fault in a 2003 Ford Ranger? Thanks for any help in advance.