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Home >> Dodge and Ram >> 2021 >> ProMaster City Base >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P2239 To U1504 >> DTC Troubleshooting >> U0426-Invalid Data Received From Immobilizer Control Module >> Possible Causes
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Possible Causes

Possible Causes
LOW BATTERY VOLTAGE
SECURITY SYSTEM DTCS PRESENT IN OTHER MODULES
INCORRECT PROXI ALIGNMENT
POWERTRAIN CONTROL MODULE (PCM)