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Home >> Chrysler >> 2023 >> Pacifica Limited, FWD, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Active Noise Cancellation Module (ANC) - DTCS B143B-11 To U050C-00 >> DTC Troubleshooting >> B154F-31-Lost Crankshaft Pulse Signal-No Signal >> Possible Causes

Possible Causes

Possible Causes
CRANKSHAFT PULSE SIGNAL (+) CIRCUIT OPEN
CRANKSHAFT PULSE SIGNAL (-) CIRCUIT OPEN
PCM
ANC MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .

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