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2014 RAM 2500
6.7L I6 Cummins Diesel•4WD•AUTOMATIC•diesel•turbo
16 active safety recalls on this vehicle — view recalls🏆Sponsored by Anonymous Sponsor
Repairs436Labor519Torque3583Fluid10DTC1790Battery1Maintenance0Recalls16
P0168moderate severityPowertrain

Fuel Temperature Too High

on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD

What this code means

The PCM has detected that fuel temperature has exceeded the expected safe range. High fuel temperature can affect fuel density and injection accuracy, impacting performance and emissions.

Symptoms

  • Reduced engine power
  • Poor fuel economy
  • Check engine light on

Common causes

  • Faulty fuel temperature sensor
  • Return fuel line overheating near exhaust
  • Wiring or connector fault at sensor
  • Actual overheated fuel due to low tank level

Diagnostic steps

  1. Read fuel temperature sensor value with scan tool
  2. Compare reading to actual fuel/ambient temperature
  3. Inspect sensor wiring and connectors for damage
  4. Test sensor resistance against spec and replace if faulty
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