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Jeep
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2025
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Compass Trailhawk
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P1DBD To P1E80
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DTC Troubleshooting
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P1DBD Fuel Pressure Sensor Rationality
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Set Condition
Set Condition
The PCM monitors Fuel Rail Pressure Sensor 1 and 2 signal readings. If the difference is greater than 5.75 kpa (0.83 psi) the fuel rail pressure is considered irrational and this fault is set.