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Home >> Chrysler >> 2021 >> Voyager LX, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> (Park Assist Module (PAM) (PTS/PAM) - Electrical Diagnostics) >> DTC Troubleshooting >> B21DD-16-System Voltage - Circuit Voltage Below Threshold >> Possible Causes

Possible Causes

Possible Causes
FUSED IGNITION RUN/START CIRCUIT EXCESSIVE RESISTANCE
GROUND CIRCUIT EXCESSIVE RESISTANCE
VEHICLE CHARGING SYSTEM
PARKTRONICS MODULE

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

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