PREVOST H3-45 2023 Operator's Manual page 266

C-12 Allison Transmission Other Features
DTC
P0721 Output Shaft Speed Sensor Circuit Performance
P0722 Output Speed Sensor Circuit No Signal
P0725 Engine Speed Sensor Circuit
P0726 Engine Speed Sensor Circuit Performance
P0727 Engine Speed Sensor Circuit No Signal
th
Incorrect 6
P0729
st
Incorrect 1
P0731
nd
Incorrect 2
P0732
rd
Incorrect 3
P0733
th
Incorrect 4
P0734
th
Incorrect 5
P0735
P0736 Incorrect Reverse Gear ratio
P0741 Torque Converter Clutch System Stuck Off
P0752 Shift Solenoid 1 Valve Performance-Stuck On
P0776 Pressure Control Solenoid (PCS) 2 Stuck Off
P0777 Pressure Control Solenoid 2 Stuck On
P077F Incorrect Reverse 2 Ratio
P07CE Neutral At Stop Not Functioning
P0796 Pressure Control Solenoid 3 Stuck Off
P0797 Pressure Control Solenoid 3 Stuck On
P0842 Transmission Fluid Pressure Switch 1 Circuit Low
P0843 Transmission Fluid Pressure Switch 1 Circuit High
P0847 Transmission Fluid Pressure Switch 2 Circuit Low
P0848 Transmission Fluid Pressure Switch 2 Circuit High
P085D Gear Shift Module 1 Performance
Description
Gear Ratio
Gear ratio
Gear ratio
Gear ratio
Gear ratio
Gear ratio
PA-1652 Operator's Manual H3-45 Coach
CHECK Inhibited Operation
Light Description
TCM freezes shift adapts.
Yes TCM
engagement.
TCM freezes shift adapts.
TCM
Yes
engagement. DNS, Lock in
current range
No Default to turbine speed
No Default to turbine speed
No Default to turbine speed
DNS, Attempt 5
Yes
DNS, Attempt 2
Yes
DNS, Attempt 3
Yes
DNS, Attempt 4
Yes
DNS, Attempt 5
Yes
DNS, Attempt 6
Yes
nd
then 2
Yes DNS, Lock in Neutral
Yes None
Yes DNS
Yes DNS, RPR
Yes DNS, RPR
Yesl DNS, Lock in Neutra
TCM inhibits Neutral at Stop
No
operation
Yes DNS, RPR
Yes DNS, RPR
Yes DNS, Lock in current range
Yes DNS, Lock in current range
Yes None
Yes None
Yes Lock in Neutral
inhibits TCC
inhibits TCC
th rd
, then 3
nd th
, then 5
rd th
, then 5
th th
, then 6
th rd
, then 3
th rd
, then 3 ,