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2004 DODGE CARAVAN
3.3L V6•FWD•AUTOMATIC•gas
8 active safety recalls on this vehicle — view recalls
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Repairs0Labor481Torque3314Fluid7DTC1736Battery1Maintenance0Recalls8
P0865moderate severityPowertrain

TCM Communication Circuit Low

on 2004 Dodge Caravan 3.3L V6 · FWD

What this code means

The transmission control module communication circuit voltage is lower than the expected threshold. A short to ground or open in the circuit is often responsible.

Symptoms

  • Transmission warning light
  • Loss of shift control
  • Limp mode

Common causes

  • Short to ground in circuit
  • Open circuit or broken wire
  • Faulty TCM
  • Poor connector contact

Diagnostic steps

  1. Scan for communication codes
  2. Measure circuit voltage at TCM
  3. Check for short to ground
  4. Inspect and repair wiring as needed
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Other Powertrain codes on this vehicle

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