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2005 RAM 3500
5.9L I6 Cummins•4WD•diesel•ISB•turbo
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Repairs0Labor523Torque138Fluid11DTC1684Battery1Maintenance0Recalls0
P2630moderate severityPowertrain

O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 1)

on 2005 Ram 3500 5.9L I6 Cummins · 4WD

What this code means

There is an open or fault in the oxygen sensor pumping current trim circuit for bank 1 sensor 1. This affects the accuracy of the air-fuel ratio measurement.

Symptoms

  • Check engine light on
  • Poor fuel economy
  • Rough running engine

Common causes

  • Faulty wide-band oxygen sensor
  • Open or corroded sensor wiring
  • Damaged sensor connector
  • PCM circuit fault

Diagnostic steps

  1. Scan and record O2 sensor data
  2. Inspect sensor wiring and connector
  3. Test sensor circuit continuity
  4. Replace O2 sensor if faulty
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