Not sure if this helps or not, but here is information from the 1998 Jeep Grand Cherokee Service Manual, ezg_25.pdf, page 6 of 20…
Hex Code = 95
Generic Scan Tool Code = P0462
DRB Scan Tool Display = Fuel Level Sending Unit Volts Too Low
Description of Diagnostic Trouble Code = Open circuit between PCM and fuel gauge sending unit.
Hex Code = 96
Generic Scan Tool Code = P0463
DRB Scan Tool Display = Fuel Level Sending Unit Volts Too High
Description of Diagnostic Trouble Code = Circuit shorted to voltage between PCM and fuel gauge sending unit.
Hex Code = 97
Generic Scan Tool Code = P0460
DRB Scan Tool Display = Fuel Level Unit No Change Over Miles
Description of Diagnostic Trouble Code = No movement of fuel level sender detected.
for additional information on troubleshooting and resolution:
http://rapidshare.com/files/138412864/ServiceManual.Jeep.Grand.Cherokee.1998_by_Parasico.rar
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0463 Fuel Level Sensor Circuit High Input
P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0161 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
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