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Home › Cadillac › 2006 › DTS 4.6 9 › Repair and Diagnosis › Engine Performance › System › Engine Control System - 4.6L - DTC P1400 To P2444 › DTC P1400 › Circuit/System Verification

Circuit/System Verification

Allow the engine to cool.
Monitor the Cold Startup parameter. This should indicate Yes.
Start and idle the engine for at least 30 seconds.
DTC P1400 should run and pass.