Allison 1000 & 2000 Gen 4 Fault Codes: P1892 Throttle Position Sensor Pulse Width Modulation (PWM) Signal High Input CIRCUIT...

Allison 1000 & 2000 Gen 4 Fault Codes: P2771 Four-Wheel Drive Switch Circuit CIRCUIT DESCRIPTION:Detects abnormal conditions for the four-wheel...

Allison 1000 & 2000 Gen 4 Fault Codes: P2773 Torque Control Request Ignored – ECM/TCM CIRCUIT DESCRIPTION:Shift Energy Management (SEM)...

Allison 1000 & 2000 Gen 4 Fault Codes: P2810 Solenoid G Electrical CIRCUIT DESCRIPTION:Solenoid G is a normally closed (N/C)...

Allison 1000 & 2000 Gen 4 Fault Codes: U0031 J1850 (Class 2) Serial Data Communication Link Low CIRCUIT DESCRIPTION:Applications that...

Allison 1000 & 2000 Gen 4 Fault Codes: U0032 J1850 (Class 2) Serial Data Communication Link High CIRCUIT DESCRIPTION:Applications that...