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Home >> Dodge and Ram >> 2018 >> Charger Pursuit, 5.7L Eng VIN T, 4WD >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> (Tire Pressure Module (TPM) - Electrical Diagnostics) >> DTC Troubleshooting >> B21DD-84-System Voltage - Signal Below Allowable Range >> Possible Causes

Possible Causes

Possible Causes
NON-FCC COMPLIANT COMPONENTS
POWERTRAIN CONTROL MODULE (PCM) DTCS
FUSED B(+) CIRCUIT HIGH RESISTANCE
GROUND CIRCUIT HIGH RESISTANCE
TIRE PRESSURE MONITORING (TPM) MODULE

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

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