Subaru Legacy (2005 year). Manual - part 439

EN(H6DO)(diag)-69

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P0333

Knock Sensor 2 Circuit High (Bank 2) <Ref. to EN(H6DO)(diag)-192, DTC P0333 KNOCK SENSOR 2 CIRCUIT 

HIGH (BANK 2), Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0335

Crankshaft Position Sensor “A” Cir-
cuit

<Ref. to EN(H6DO)(diag)-194, DTC P0335 CRANKSHAFT POSITION SEN-
SOR “A” CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0340

Camshaft Position Sensor “A” Circuit 
(Bank 1 or Single Sensor)

<Ref. to EN(H6DO)(diag)-196, DTC P0340 CAMSHAFT POSITION SEN-
SOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P0345

Camshaft Position Sensor “A” Circuit 
(Bank 2)

<Ref. to EN(H6DO)(diag)-198, DTC P0345 CAMSHAFT POSITION SEN-
SOR “A” CIRCUIT (BANK 2), Diagnostic Procedure with Diagnostic Trouble 
Code (DTC).>

P0400

Exhaust Gas Recirculation Flow

<Ref. to EN(H6DO)(diag)-200, DTC P0400 EXHAUST GAS RECIRCULA-
TION FLOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0420

Catalyst System Efficiency Below 
Threshold (Bank 1)

<Ref. to EN(H6DO)(diag)-202, DTC P0420 CATALYST SYSTEM EFFI-
CIENCY BELOW THRESHOLD (BANK1), Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

P0458

Evaporative Emission System Purge 
Control Valve Circuit Low

<Ref. to EN(H6DO)(diag)-205, DTC P0458 EVAPORATIVE EMISSION SYS-
TEM PURGE CONTROL VALVE CIRCUIT LOW, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0459

Evaporative Emission System Purge 
Control Valve Circuit High

<Ref. to EN(H6DO)(diag)-207, DTC P0459 EVAPORATIVE EMISSION SYS-
TEM PURGE CONTROL VALVE CIRCUIT HIGH, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0462

Fuel Level Sensor “A” Circuit Low

<Ref. to EN(H6DO)(diag)-209, DTC P0462 FUEL LEVEL SENSOR “A” CIR-
CUIT LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0463

Fuel Level Sensor “A” Circuit High

<Ref. to EN(H6DO)(diag)-209, DTC P0463 FUEL LEVEL SENSOR “A” CIR-
CUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0500

Vehicle Speed Sensor “A”

<Ref. to EN(H6DO)(diag)-209, DTC P0500 VEHICLE SPEED SENSOR “A”, 
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0512

Starter Request Circuit

<Ref. to EN(H6DO)(diag)-209, DTC P0512 STARTER REQUEST CIRCUIT, 
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0519

Idle Air Control System Performance

<Ref. to EN(H6DO)(diag)-211, DTC P0519 IDLE AIR CONTROL SYSTEM 
PERFORMANCE, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0600

Serial Communication Link

<Ref. to EN(H6DO)(diag)-211, DTC P0600 SERIAL COMMUNICATION 
LINK, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0604

Internal Control Module Random 
Access Memory (RAM) Error

<Ref. to EN(H6DO)(diag)-212, DTC P0604 INTERNAL CONTROL MODULE 
RANDAM ACCESS MEMORY (RAM) ERROR, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0605

Internal Control Module Read Only 
Memory (ROM) Error

<Ref. to EN(H6DO)(diag)-213, DTC P0605 INTERNAL CONTROL MODULE 
READ ONLY MEMORY (ROM) ERROR, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>

P0607

Control Module Performance

<Ref. to EN(H6DO)(diag)-214, DTC P0607 CONTROL MODULE PERFOR-
MANCE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0638

Throttle Actuator Control Range/Per-
formance (Bank 1)

<Ref. to EN(H6DO)(diag)-215, DTC P0638 THROTTLE ACTUATOR CON-
TROL RANGE/PERFORMANCE (BANK 1), Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

P0691

Fan 1 Control Circuit Low

<Ref. to EN(H6DO)(diag)-216, DTC P0691 FAN 1 CONTROL CIRCUIT 
LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0692

Fan 1 Control Circuit High

<Ref. to EN(H6DO)(diag)-216, DTC P0692 FAN 1 CONTROL CIRCUIT 
HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0700

Transmission Control System (MIL 
Request)

<Ref. to EN(H6DO)(diag)-216, DTC P0700 TRANSMISSION CONTROL 
SYSTEM (MIL REQUEST), Diagnostic Procedure with Diagnostic Trouble 
Code (DTC).>

P0851

Park/Neutral Switch Input Circuit Low <Ref. to EN(H6DO)(diag)-217, DTC P0851 PARK/NEUTRAL SWITCH 

INPUT CIRCUIT LOW, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

DTC

Item

Reference

EN(H6DO)(diag)-70

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P0852

Park/Neutral Switch Input Circuit 
High

<Ref. to EN(H6DO)(diag)-220, DTC P0852 PARK/NEUTRAL SWITCH 
INPUT CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1160

Return Spring Failure

<Ref. to EN(H6DO)(diag)-222, DTC P1160 RETURN SPRING FAILURE, 
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P1492

EGR Solenoid Valve Signal #1 Cir-
cuit Malfunction (Low Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1492 EGR SOLENOID VALVE SIG-
NAL #1 CIRCUIT MALFUNCTION (LOW INPUT), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1493

EGR Solenoid Valve Signal #1 Cir-
cuit Malfunction (High Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1493 EGR SOLENOID VALVE SIG-
NAL #1 CIRCUIT MALFUNCTION (HIGH INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P1494

EGR Solenoid Valve Signal #2 Cir-
cuit Malfunction (Low Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1494 EGR SOLENOID VALVE SIG-
NAL #2 CIRCUIT MALFUNCTION (LOW INPUT), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1495

EGR Solenoid Valve Signal #2 Cir-
cuit Malfunction (High Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1495 EGR SOLENOID VALVE SIG-
NAL #2 CIRCUIT MALFUNCTION (HIGH INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P1496

EGR Solenoid Valve Signal #3 Cir-
cuit Malfunction (Low Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1496 EGR SOLENOID VALVE SIG-
NAL #3 CIRCUIT MALFUNCTION (LOW INPUT), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1497

EGR Solenoid Valve Signal #3 Cir-
cuit Malfunction (High Input)

<Ref. to EN(H6DO)(diag)-222, DTC P1497 EGR SOLENOID VALVE SIG-
NAL #3 CIRCUIT MALFUNCTION (HIGH INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P1498

EGR Solenoid Valve Signal #4 Cir-
cuit Malfunction (Low Input)

<Ref. to EN(H6DO)(diag)-223, DTC P1498 EGR SOLENOID VALVE SIG-
NAL #4 CIRCUIT MALFUNCTION (LOW INPUT), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1499

EGR Solenoid Valve Signal #4 Cir-
cuit Malfunction (High Input)

<Ref. to EN(H6DO)(diag)-225, DTC P1499 EGR SOLENOID VALVE SIG-
NAL #4 CIRCUIT MALFUNCTION (HIGH INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P1518

Starter Switch Circuit Low Input

<Ref. to EN(H6DO)(diag)-226, DTC P1518 STARTER SWITCH CIRCUIT 
LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P1560

Back-up Voltage Circuit Malfunction

<Ref. to EN(H6DO)(diag)-229, DTC P1560 BACK-UP VOLTAGE CIRCUIT 
MALFUNCTION, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P2088

Intake Camshaft Position Actuator 
Control Circuit Low (Bank 1)

<Ref. to EN(H6DO)(diag)-231, DTC P2088 INTAKE CAMSHAFT POSITION 
ACTUATOR CONTROL CIRCUIT LOW (BANK 1), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2089

Intake Camshaft Position Actuator 
Control Circuit High (Bank 1)

<Ref. to EN(H6DO)(diag)-233, DTC P2089 INTAKE CAMSHAFT POSITION 
ACTUATOR CONTROL CIRCUIT HIGH (BANK 1), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P2092

Intake Camshaft Position Actuator 
Control Circuit Low (Bank 2)

<Ref. to EN(H6DO)(diag)-235, DTC P2092 INTAKE CAMSHAFT POSITION 
ACTUATOR CONTROL CIRCUIT LOW (BANK 2), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2093

Intake Camshaft Position Actuator 
Control Circuit High (Bank 2)

<Ref. to EN(H6DO)(diag)-237, DTC P2093 INTAKE CAMSHAFT POSITION 
ACTUATOR CONTROL CIRCUIT HIGH (BANK 2), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P2101

Throttle Actuator Control Motor Cir-
cuit Range/Performance

<Ref. to EN(H6DO)(diag)-239, DTC P2101 THROTTLE ACTUATOR CON-
TROL MOTOR CIRCUIT RANGE/PERFORMANCE, Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P2102

Throttle Actuator Control Motor Cir-
cuit Low

<Ref. to EN(H6DO)(diag)-245, DTC P2102 THROTTLE ACTUATOR CON-
TROL MOTOR CIRCUIT LOW, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

P2103

Throttle Actuator Control Motor Cir-
cuit High

<Ref. to EN(H6DO)(diag)-247, DTC P2103 THROTTLE ACTUATOR CON-
TROL MOTOR CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

DTC

Item

Reference

EN(H6DO)(diag)-71

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P2109

Throttle/Pedal Position Sensor “A” 
Minimum stop performance

<Ref. to EN(H6DO)(diag)-248, DTC P2109 THROTTLE/PEDAL POSITION 
SENSOR “A” MINIMUM STOP PERFORMANCE, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2122

Throttle/Pedal Position Sensor/
Switch “D” Circuit Low Input

<Ref. to EN(H6DO)(diag)-249, DTC P2122 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “D” CIRCUIT LOW INPUT, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2123

Throttle/Pedal Position Sensor/
Switch “D” Circuit High Input

<Ref. to EN(H6DO)(diag)-252, DTC P2123 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “D” CIRCUIT HIGH INPUT, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2127

Throttle/Pedal Position Sensor/
Switch “E” Circuit Low Input

<Ref. to EN(H6DO)(diag)-254, DTC P2127 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “E” CIRCUIT LOW INPUT, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2128

Throttle/Pedal Position Sensor/
Switch “E” Circuit High Input

<Ref. to EN(H6DO)(diag)-257, DTC P2128 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “E” CIRCUIT HIGH INPUT, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P2135

Throttle/Pedal Position Sensor/
Switch “A”/“B” Voltage Correlation

<Ref. to EN(H6DO)(diag)-259, DTC P2135 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “A” / “B” VOLTAGE CORRELATION, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

P2138

Throttle/Pedal Position Sensor/
Switch “D”/“E” Voltage Correlation

<Ref. to EN(H6DO)(diag)-263, DTC P2138 THROTTLE/PEDAL POSITION 
SENSOR/SWITCH “D” / “E” VOLTAGE CORRELATION, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

P2503

Charging System Voltage Low

<Ref. to EN(H6DO)(diag)-266, DTC P2503 CHARGING SYSTEM VOLTAGE 
LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P2504

Charging System Voltage High

<Ref. to EN(H6DO)(diag)-267, DTC P2504 CHARGING SYSTEM VOLTAGE 
HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

DTC

Item

Reference

EN(H6DO)(diag)-72

ENGINE (DIAGNOSTICS)

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

18.Diagnostic Procedure with Diagnostic Trouble Code (DTC)

A: DTC P0011 INTAKE CAMSHAFT POSITION-TIMING OVER-ADVANCED OR 

SYSTEM PERFORMANCE (BANK1)

DTC DETECTING CONDITION:
Detects when malfunction occurs in 2 continuous driving cycles.
TROUBLE SYMPTOM:
• Engine stalls.
• Erroneous idling

CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-41, 
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-34, Inspection 
Mode.>.

Step

Check

Yes

No

1

CHECK ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Inspect the rele-
vant DTC using 
“List of Diagnostic 
Trouble Code 
(DTC)”. <Ref. to 
EN(H6DO)(diag)-
66, List of Diag-
nostic Trouble 
Code (DTC).>

Go to step 2.

2

CHECK CURRENT DATA.
1) Start the engine and let it idle.
2) Measure the AVCS system operating angle 
and oil flow control solenoid valve duty output 
using Subaru Select Monitor or general scan 
tool.

NOTE:

• Subaru Select Monitor
For detailed operation procedure, refer to 
“READ CURRENT DATA FOR ENGINE”. <Ref. 
to EN(H6DO)(diag)-26, Subaru Select Moni-
tor.>
• General scan tool
For detailed operation procedure, refer to the 
general scan tool operation manual.

Is the AVCS system operating 
angle approx. 0 deg., and oil 
flow control solenoid valve duty 
output approx. 10%?

Check the follow-
ing and repair or 
replace if neces-
sary.

• Oil pipe (clog)
• Oil flow con-
trol solenoid 
valve (clog or 
dirt of oil rout-
ing, setting of 
spring, clog of 
valve)
• Intake cam-
shaft (dirt, dam-
age of 
camshaft)
• Timing chain 
(matching of 
timing mark)

A temporary mal-
function. Perform 
the following, and 
clean the oil rout-
ing.
Replace the 
engine oil and idle 
the engine for 5 
minutes, and then 
replace the oil filter 
and engine oil.