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Allison 3000 & 4000 Gen 4 Fault Code: P0968 Pressure Control Solenoid 3 (PCS3) Control Circuit Open

Allison 3000 & 4000 Gen 4 Fault Code: P0970 Pressure Control Solenoid 3 (PCS3) Control Circuit Low

Allison 3000 & 4000 Gen 4 Fault Code: P0971 Pressure Control Solenoid 3 (PCS3) Control Circuit High

Allison 3000 & 4000 Gen 4 Fault Code: P0973 Shift Solenoid 1 (SS1) Control Circuit Low

Allison 3000 & 4000 Gen 4 Fault Code: P0974 Shift Solenoid 1 (SS1) Control Circuit High

Allison 3000 & 4000 Gen 4 Fault Code: P0975 Shift Solenoid 2 (SS2) Control Circuit Open

Allison 3000 & 4000 Gen 4 Fault Code: P0976 Shift Solenoid 2 (SS2) Control Circuit Low

Allison 3000 & 4000 Gen 4 Fault Code: P0977 Shift Solenoid 2 (SS2) Control Circuit High

Allison 3000 & 4000 Gen 4 Fault Code: P0989 Retarder Pressure Sensor Failed Low

Allison 3000 & 4000 Gen 4 Fault Code: P0990 Retarder Pressure Sensor Failed High