Mike's Workshop Manuals
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2022
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Grand Cherokee 4xe
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Repair and Diagnosis
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Engine Performance
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2.0L - DTCS P1618 To P1DC5
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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.