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Home >> Dodge and Ram >> 2021 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> (Instrument Cluster - Electrical Diagnostics) >> DTC Troubleshooting >> U1701-86-ECM Engine Control Module - Signal Invalid >> Possible Causes

Possible Causes

Possible Causes
BODY CONTROL MODULE (BCM) DTCS PRESENT
POWERTRAIN CONTROL MODULE (PCM) DTCS PRESENT
POWERTRAIN CONTROL MODULE (PCM)
INSTRUMENT PANEL CLUSTER (IPC)

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