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Home >> Jeep >> 2021 >> Grand Cherokee SRT >> Repair and Diagnosis >> Engine Performance >> System >> 6.4L - DTCS P1621 To P2317 >> DTC Troubleshooting >> P2066-Fuel Level Sensor 2 Performance >> Possible Causes
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Possible Causes

Possible Causes
CAN BUS FAILURE
HIGH RESISTANCE IN THE FUEL LEVEL SENSOR SIGNAL 2 CIRCUIT
HIGH RESISTANCE IN THE FUEL LEVEL SENSE RETURN SIGNAL 2 CIRCUIT
FUEL TANK
FUEL LEVEL SENSOR
BODY CONTROL MODULE (BCM)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .