C-12 Allison Transmission Other Features
PA-1628Operator's ManualH3-45 COACH
DTC Description
CHECK
Light
Inhibited Operation
Description
P088B Transmission Fluid Filter Maintenance Required No None
P0880 TCM Power Input Signal No None
P0881 TCM Power Input Signal Performance No None
P0882 TCM Power Input Signal Low Yes
DNS, SOL OFF (hydraulic
default)
P0883 TCM Power Input Signal High No None
P0894 Unexpected Mechanical Gear Disengagement Yes DNS, Lock in first
P0897 Transmission Fluid Deteriorated No None
P0960 Main Pressure Modulator Solenoid Control Circuit Open Yes None
P0962 Main Pressure Modulator Solenoid Control Circuit Low Yes
DNS, SOL OFF (hydraulic
default)
P0963 Main Pressure Modulator Solenoid Control Circuit High Yes None
P0964 Pressure Control Solenoid 2 (PCS2) Control Circuit Open Yes
DNS, SOL OFF (hydraulic
default)
P0966 Pressure Control Solenoid 2 (PCS2) Control Circuit Low Yes
DNS, SOL OFF (hydraulic
default)
P0967 Pressure Control Solenoid 2 (PCS2) Control Circuit High Yes
DNS, SOL OFF (hydraulic
default)
P0968 Pressure Control Solenoid 3 (PCS3) Control Circuit Open Yes
DNS, SOL OFF (hydraulic
default)
P0970 Pressure Control Solenoid 3 (PCS3) Control Circuit Low Yes
DNS, SOL OFF (hydraulic
default)
P0971 Pressure Control Solenoid 3 (PCS3) Control Circuit High Yes
DNS, SOL OFF (hydraulic
default)
P0973 Shift Solenoid 1 (SS1) Control Circuit Low Yes
DNS, SOL OFF (hydraulic
default)
P0974 Shift Solenoid 1 (SS1) Control Circuit High Yes
DNS, SOL OFF (hydraulic
default)
P0976 Shift Solenoid 2 (SS2) Control Circuit Low Yes
7-speed: Allow 2 through 6, N,
R
Inhibit TCC operation
P0977 Shift Solenoid 2 (SS2) Control Circuit High Yes
7-speed: Allow 2 through 6, N,
R
P097A Shift Solenoid 1 (SS1) Control Circuit Open Yes Lock in range
P097B Shift Solenoid 2 (SS2) Control Circuit Open Yes
7-speed: Allow 2 through 6, N,
R
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