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2021 DODGE DURANGO
6.2L V8 Supercharged•4WD•AUTOMATIC•gas•supercharged
8 active safety recalls on this vehicle — view recalls
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Repairs0Labor498Torque2417Fluid10DTC1925Battery1Maintenance0Recalls8
P1618high severityPowertrain

Interruption of Serial Communication Link

on 2021 Dodge Durango 6.2L V8 Supercharged · 4WD

What this code means

The PCM detected a loss or interruption of the serial communication link between modules. This is a Chrysler-specific code with no direct OBD-II generic equivalent.

Symptoms

  • Warning lights on
  • Modules not communicating
  • Erratic gauge behavior

Common causes

  • Faulty communication bus wiring
  • Bad module connector
  • Failing control module
  • Poor ground

Diagnostic steps

  1. Scan all modules for codes
  2. Inspect communication bus wiring
  3. Check module connectors and grounds
  4. Test bus signals with scope
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Other Powertrain codes on this vehicle

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