P1645 Buick
Evaporative Emission Purge Solenoid Output Circuit
Buick
P1641 Buick
Cooling Fan Relay 1 Control Circuit
P1642 Buick
Fan Control Relay 2 and 3 Control Circuit
P1643 Buick
Wait To Start Lamp Control Circuit Conditions
P1637 Buick
Generator L-Terminal Circuit
P1638 Buick
Generator ‘F’ Terminal Circuit Conditions
P1639 Buick
PCM 5 Volt Reference Voltage Circuit Condition
P1640 Buick
Output Driver Module ‘A’ Error Conditions
P1633 Buick
Ignition Supply Power Circuit Low Voltage
P1634 Buick
Ignition 1 Power Circuit Low Voltage