PREVOST H3-41 - Diagnostic Code List and Description

TECHNICAL INFORMATION
• Inhibit all shifts.
• Turn ON the CHECK TRANS light.
• Display the range attained.
• Ignore any range selection inputs from the
shift selector.
DNA - Do Not Adapt Response
The ECU stops adaptive shift control while the
code is active.
SOL OFF - SOLenoid OFF Response
All solenoids are commanded OFF (turning
solenoids “A” and “B” off electrically cause them
to be on hydraulically).
RPR - Return to Previous Range Response
When the speed sensor ratio or C3 pressure
switch test associated with a shift not successful,
the ECU commands the same range as
commanded before the shift.
NNC - Neutral No Clutches Response
When certain speed sensor ratio or C3 pressure
switch tests are not successful, the ECU
commands a neutral condition with no clutches
applied.
DIAGNOSTIC CODE LIST AND DESCRIPTION
MAIN
CODE
SUB
CODE
DESCRIPTION
CHECK
TRANS
LIGHT
INHIBITED OPERATION
DESCRIPTION
13 12 ECU input voltage, low Yes
DNS, DNA, SOL OFF,
(Hydraulic default)
13
13
ECU input voltage, medium low
No
DNA
13 23 ECU input voltage, high Yes
DNS, SOL OFF
(Hydraulic default)
14
12
Oil level sensor, failed low
No
None
14
23
Oil level sensor, failed high
No
None
22 14
Engine speed sensor reasonableness
test
No
Use default engine speed,
DNA
22 15
Turbine speed sensor
reasonableness test
Yes
DNS, lock in current range,
DNA
22 16
Output speed sensor reasonableness
test
Yes
(1)
DNS, LOCK IN CURRENT
RANGE, DNA
23 12
Primary Shift Selector or RSI Link
Fault
Yes
Hold in last valid direction.
May cause "cateye" display
23 14
Secondary Shift Selector or RSI Link
Fault
Yes Hold in last valid direction
23 16 Shift Selector display line fault No
None, may cause "cateye"
display
24
12
Sump fluid temperature, cold
Yes
DNS, lock in neutral
24 23 Sump fluid temperature, hot No
No upshifts above a
calibration range
25 0
Output speed sensor detected at 0
speed (Low)
Yes
(1)
DNS, lock in current range
(Low), DNA
25 11
Output speed sensor detected at 0
speed (1st)
Yes
(1)
DNS, lock in current range
(1st), DNA
25 22
Output speed sensor detected at 0
speed (2nd)
Yes
(1)
DNS, lock in current range
(2nd), DNA
25 33
Output speed sensor detected at 0
speed (3rd)
Yes
(1)
DNS, lock in current range
(3rd), DNA
25 44
Output speed sensor detected at 0
speed (4th)
Yes
(1)
DNS, lock in current range
(4th), DNA
25 55
Output speed sensor detected at 0
speed (5th)
Yes
(1)
DNS, lock in current range
(5th), DNA
127