P0177low severityPowertrain
Fuel Composition Sensor Circuit Range/Performance
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The fuel composition sensor reading is outside expected range.
Symptoms
- Check Engine Light
- Incorrect fueling
Common causes
- Contaminated sensor
- Sensor calibration issue
- Mixed fuel types
Diagnostic steps
- Compare sensor reading to known fuel type
- Test sensor output range
Repair notes
Replace sensor.
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Other Powertrain codes on this vehicle
P0001
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P0002
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P0013
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P0014
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P0015
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