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2007 RAM 3500
5.9L I6 Cummins•4WD•diesel•ISB•turbo
1 active safety recall on this vehicle — view recalls🏆Sponsored by Timmehster
Repairs487Labor523Torque138Fluid11DTC1714Battery1Maintenance0Recalls1
P0802low severityPowertrain

Transmission MIL Request Circuit Open

on 2007 Ram 3500 5.9L I6 Cummins · 4WD

What this code means

An open circuit was detected in the line the transmission control module uses to request the malfunction indicator lamp. This can prevent proper illumination of transmission fault warnings.

Symptoms

  • MIL may not illuminate for trans faults
  • Warning lamp behavior abnormal
  • Related transmission codes stored

Common causes

  • Open wiring in MIL request circuit
  • Corroded or loose connector
  • Faulty TCM output driver
  • Instrument cluster fault

Diagnostic steps

  1. Retrieve all stored codes
  2. Inspect MIL request wiring for opens
  3. Check TCM and cluster connectors
  4. Test continuity between TCM and cluster
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