Subaru Legacy (2005 year). Service manual — part 610
5AT(diag)-31
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
List of Diagnostic Trouble Code (DTC)
13.List of Diagnostic Trouble Code (DTC)
A: LIST
DTC
Item
Contents of diagnosis
Reference target
P0705
Transmission Range
Sensor Circuit (PRNDL
Input)
Inhibitor switch malfunction, open
or short circuit
P0712
Transmission Fluid Tem-
perature Sensor Circuit
Low Input
ATF temperature sensor 1 mal-
function, open input signal circuit
P0713
Transmission Fluid Tem-
perature Sensor Circuit
High Input
ATF temperature sensor 1 mal-
function, short input signal circuit
P0715
Input/Turbine Speed
Sensor Circuit
Turbine speed sensor 1 malfunc-
tion, short input signal circuit
P0719
Torque Converter/Brake
Switch “B” Circuit Low
Brake switch malfunction, open
input signal circuit, body inte-
grated module malfunction, CAN
communication malfunction
P0720
Output Speed Sensor
Circuit
Front wheel speed sensor is
faulty or input signal circuit,
ground, power supply is open or
shorted.
P0724
Torque Converter/Brake
Switch “B” Circuit High
Brake switch malfunction, short
circuit of input signal, body inte-
grated module malfunction, CAN
communication malfunction
P0725
Engine Speed Input Cir-
cuit
Open or short engine speed out-
put signal circuit, ECM malfunc-
tion, CAN communication
malfunction
P0731
Gear 1 Incorrect Ratio
Vehicle sensor, turbine speed
sensor, control valve malfunction
or shift clutch malfunction
P0732
Gear 2 Incorrect Ratio
Vehicle sensor, turbine speed
sensor, control valve malfunction
or shift clutch malfunction
P0733
Gear 3 Incorrect Ratio
Vehicle sensor, torque converter
turbine speed sensor or shift
clutch malfunction
P0734
Gear 4 Incorrect Ratio
Vehicle sensor, torque converter
turbine speed sensor or shift
clutch malfunction
P0735
Gear 5 Incorrect Ratio
Vehicle sensor, torque converter
turbine speed sensor or shift
clutch malfunction
P0736
Reverse Incorrect Ratio
Vehicle sensor, torque converter
turbine speed sensor or shift
clutch malfunction
P0741
Torque Converter Clutch
Circuit Performance or
Stuck Off
Lock-up clutch is faulty or valve is
stuck.
5AT(diag)-32
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
List of Diagnostic Trouble Code (DTC)
P0743
Torque Converter Clutch
Circuit Electrical
L/U solenoid circuit malfunction
or L/U solenoid body malfunction
P0748
Pressure Control Sole-
noid “A” Electrical
Line pressure solenoid circuit
malfunction or line pressure sole-
noid body malfunction
P0751
Shift Solenoid “A” Perfor-
mance or Stuck Off
Shift Solenoid “A” performance
malfunction
P0753
Shift Solenoid “A” Elec-
trical
Fr/B solenoid circuit malfunction
or Fr/B solenoid body malfunction
P0756
Shift Solenoid “B” Perfor-
mance or Stuck Off
Shift Solenoid “B” Performance
malfunction
P0758
Shift Solenoid “B” Elec-
trical
I/C solenoid circuit malfunction or
I/C solenoid body malfunction
P0761
Shift Solenoid “C” Perfor-
mance or Stuck Off
H&LR/C solenoid malfunction
P0763
Shift Solenoid “C” Elec-
trical
H&LR/C solenoid circuit malfunc-
tion or H&LR/C solenoid body
malfunction
P0766
Shift Solenoid “D” Perfor-
mance or Stuck Off
D/C solenoid malfunction
P0768
Shift Solenoid “D” Elec-
trical
D/C solenoid circuit malfunction
or D/C solenoid body malfunction
P0771
Shift Solenoid “E” Perfor-
mance or Stuck Off
LC/B solenoid malfunction
P0773
Shift Solenoid “E” Elec-
trical
• LC/B solenoid circuit malfunc-
tion or LC/B solenoid body mal-
function
• OFF malfunction of PVIGN
relay circuit or relay body
P0801
Reverse Inhibit Control
Circuit
• Shift lock solenoid is faulty or
output signal circuit is open or
shorted.
• Blown out of TCM+B fuse
P0817
Starter Disable Circuit
• PN signal output circuit is open
or shorted.
• ECM Source Voltage Is Abnor-
mal
• Blown out of TCM+B fuse
P0882
TCM Power Input Signal
Low
PVIGN relay output circuit is
open, shorted or relay malfunc-
tion
DTC
Item
Contents of diagnosis
Reference target
5AT(diag)-33
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
List of Diagnostic Trouble Code (DTC)
P0957
Backup Light Relay Cir-
cuit Low
Back-up relay output circuit is
open, shorted or relay OFF mal-
function
P0958
Backup Light Relay Cir-
cuit High
Back-up relay output circuit is
open, shorted or relay ON mal-
function
P1601
TCM Data Communica-
tion Failure
Communication Failure between
TCM and Memory Box
P1706
AT Vehicle Speed Sen-
sor Circuit Malfunction
(Rear Wheel)
Rear wheel speed sensor is faulty
or input circuit, ground, power
supply is open or shorted.
P1707
AT AWD Solenoid Valve
Circuit Malfunction
AWD solenoid circuit malfunction
or AWD solenoid body malfunc-
tion
P1710
Torque Converter Tur-
bine 2 Speed Signal Cir-
cuit 2 Malfunction
Torque converter sensor 2 mal-
function, input circuit, ground,
power open, short circuit
P1716
ATF Temp. Sensor 2 Cir-
cuit Low
ATF temperature sensor 2 mal-
function, open input signal circuit
P1717
ATF Temp. Sensor 2 Cir-
cuit High
ATF temperature sensor 2 mal-
function, short input signal circuit
P1718
AT CAN Communication
Circuit
CAN communication line bus off
is open, EUM short circuit, ABS/
VDCCM, integrated CU malfunc-
tion
P1760
Lateral Acceleration
Sensor Performance
Problem
Lateral G sensor malfunction
P1761
Lateral Acceleration
Sensor Circuit Low
Lateral G sensor is faulty, input
signal circuit is open or CAN
communication is malfunction.
P1762
Lateral Acceleration
Sensor Circuit High
Lateral G sensor is faulty or input
signal circuit is shorted.
P1798
Gear 1 Engine Brake
Malfunction of clutch oil pressure
related to 1st engine brake, sole-
noid current malfunction
P1799
Interlock
Malfunction of clutch oil pressure
which emit interlock, solenoid
current malfunction
P1817
SPORT Mode Switch
Circuit (Manual Switch)
SPORT mode and manual mode
switch is open or shorted, or
switch malfunction
P1840
Transmission Fluid Pres-
sure Sensor/Switch A
Circuit
Fr/B oil pressure switch is open or
shorted, or switch malfunction
DTC
Item
Contents of diagnosis
Reference target
5AT(diag)-34
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
List of Diagnostic Trouble Code (DTC)
P1842
Transmission Fluid Pres-
sure Sensor/Switch C
Circuit
I/C oil pressure switch is open or
shorted, or switch malfunction
P1843
Transmission Fluid Pres-
sure Sensor/Switch D
Circuit
D/C oil pressure switch is open or
shorted, or switch malfunction
P1844
Transmission Fluid Pres-
sure Sensor/Switch E
Circuit
H&LR/C oil pressure switch is
open or shorted, or switch mal-
function
DTC
Item
Contents of diagnosis
Reference target
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