P1842 GMC - 1-2 Shift Solenoid Circuit Low Input Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty 1-2 Shift Solenoid
  • 1-2 Shift Solenoid harness is open or shorted
  • 1-2 Shift Solenoid circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1842 Gmc Description

With 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.
OBDII Code P1842 Gmc - 1-2 Shift Solenoid Circuit Low Input Voltage - AutoCodes.com

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P1842 GMC Comments

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