Allison 1000 & 2000 Gen 4 Fault Codes: P0123 Pedal Position Sensor Circuit High Voltage CIRCUIT DESCRIPTION:The Transmission Control Module...

Allison 1000 & 2000 Gen 4 Fault Codes: P0218 Transmission Fluid Over Temperature Condition CIRCUIT DESCRIPTION:The flow of transmission fluid...

Allison 1000 & 2000 Gen 4 Fault Codes: P0561 Unrealistic Variations in Vehicle System Voltage CIRCUIT DESCRIPTION:The Transmission Control Module...

Allison 1000 & 2000 Gen 4 Fault Codes: P0562 System Voltage Low CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) requires a...

Allison 1000 & 2000 Gen 4 Fault Codes: P0563 System Voltage High CIRCUIT DESCRIPTION:The Transmission Control Module (TCM) requires a...

Allison 1000 & 2000 Gen 4 Fault Codes: P0602 TCM Not Programmed CIRCUIT DESCRIPTION:At the power up and after clearing...