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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (3.0L Diesel - DTCS P1693-00 To P2200-00) >> DTC Troubleshooting >> P21C5-00-REDUCTANT Level Sensor 1 Stuck >> Set Condition

Set Condition

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The PCM compares the DEF tank level actual height differences during acceleration (sloshing) to a calculated level. If the comparison is less than or equal to a calibrated threshold for a calibrated amount of time, the PCM will set this DTC. This is a two Trip Fault.