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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
POWERTRAIN CONTROL MODULE (PCM) DTC INDEX

DTC (1) Description Perform Test
B1317 Battery Voltage High C 
B1318 Battery Voltage Low A 
P1246 System Voltage Failure (2)
(1) Codes listed in this table is only for testing covered in this article. For complete DTC listing, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(2) See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE to diagnose fault.