P1842 BUICK - 1-2 Shift Solenoid Circuit Low Input Voltage
- Faulty 1-2 Shift Solenoid
- 1-2 Shift Solenoid harness is open or shorted
- 1-2 Shift Solenoid circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P1842 Buick DescriptionWith the engine runtime over 5 seconds, system voltage from 8-18v, Fuel Cutoff inactive, the Powertrain Control Module (PCM) detects an open circuit or a short to ground on the 1-2 Shift Solenoid feedback circuit for 4.3 seconds.
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