LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Oldsmobile
>>
1996
>>
Eighty-Eight Base
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
System
>>
Engine Control Systems Tests W/Codes
>>
Diagnostic Trouble Codes
>>
DTC P1643 - Fuel Pump Pulse Width Modulation (PWM) Control Circuit
>>
Conditions required to set DTC are:
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Conditions required to set DTC are:
Ignition is on.
An improper voltage level has been detected on fuel pump PWM driver circuit.
Listed conditions are present for more than 30 seconds.