Subaru Legacy (2005 year). Manual - part 119

EN(H4SO 2.0)(diag)-65

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P0134

O2 Sensor Circuit No Activity 
Detected (Bank 1 Sensor 1)

<Ref. to EN(H4SO 2.0)(diag)-113, DTC P0134 O2 SENSOR CIRCUIT NO 
ACTIVITY DETECTED (BANK 1 SENSOR 1), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0137

O2 Sensor Circuit Low Voltage (Bank 
1 Sensor 2)

<Ref. to EN(H4SO 2.0)(diag)-115, DTC P0137 O2 SENSOR CIRCUIT LOW 
VOLTAGE (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

P0138

O2 Sensor Circuit High Voltage 
(Bank 1 Sensor 2)

<Ref. to EN(H4SO 2.0)(diag)-118, DTC P0138 O2 SENSOR CIRCUIT HIGH 
VOLTAGE (BANK 1 SENSOR 2), Diagnostic Procedure with Diagnostic Trou-
ble Code (DTC).>

P0139

O2 Sensor Circuit Slow Response 
(Bank 1 Sensor 2)

<Ref. to EN(H4SO 2.0)(diag)-121, DTC P0139 O2 SENSOR CIRCUIT 
SLOW RESPONSE (BANK 1 SENSOR 2), Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

P0171

System Too Lean (Bank 1)

<Ref. to EN(H4SO 2.0)(diag)-123, DTC P0171 SYSTEM TOO LEAN (BANK 
1), Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0172

System Too Rich (Bank 1)

<Ref. to EN(H4SO 2.0)(diag)-123, DTC P0172 SYSTEM TOO RICH (BANK 
1), Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0222

Throttle/Pedal Position Sensor/
Switch “B” Circuit Low

<Ref. to EN(H4SO 2.0)(diag)-125, DTC P0222 THROTTLE/PEDAL POSI-
TION SENSOR/SWITCH “B” CIRCUIT LOW, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0223

Throttle/Pedal Position Sensor/
Switch “B” Circuit High

<Ref. to EN(H4SO 2.0)(diag)-128, DTC P0223 THROTTLE/PEDAL POSI-
TION SENSOR/SWITCH “B” CIRCUIT HIGH, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0301

Cylinder 1 Misfire Detected

<Ref. to EN(H4SO 2.0)(diag)-131, DTC P0301 CYLINDER 1 MISFIRE 
DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0302

Cylinder 2 Misfire Detected

<Ref. to EN(H4SO 2.0)(diag)-131, DTC P0302 CYLINDER 2 MISFIRE 
DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0303

Cylinder 3 Misfire Detected

<Ref. to EN(H4SO 2.0)(diag)-131, DTC P0303 CYLINDER 3 MISFIRE 
DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0304

Cylinder 4 Misfire Detected

<Ref. to EN(H4SO 2.0)(diag)-132, DTC P0304 CYLINDER 4 MISFIRE 
DETECTED, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0327

Knock Sensor 1 Circuit Low (Bank 1 
or Single Sensor)

<Ref. to EN(H4SO 2.0)(diag)-139, DTC P0327 KNOCK SENSOR 1 CIR-
CUIT LOW (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0328

Knock Sensor 1 Circuit High (Bank 1 
or Single Sensor)

<Ref. to EN(H4SO 2.0)(diag)-141, DTC P0328 KNOCK SENSOR 1 CIR-
CUIT HIGH (BANK 1 OR SINGLE SENSOR), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0335

Crankshaft Position Sensor “A” Cir-
cuit

<Ref. to EN(H4SO 2.0)(diag)-143, DTC P0335 CRANKSHAFT POSITION 
SENSOR “A” CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0340

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

<Ref. to EN(H4SO 2.0)(diag)-145, DTC P0340 CAMSHAFT POSITION 
SENSOR “A” CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

P0400

Exhaust Gas Recirculation Flow

<Ref. to EN(H4SO 2.0)(diag)-147, DTC P0400 EXHAUST GAS RECIRCU-
LATION FLOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0420

Catalyst System Efficiency Below 
Threshold (Bank 1)

<Ref. to EN(H4SO 2.0)(diag)-150, 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(H4SO 2.0)(diag)-152, DTC P0458 EVAPORATIVE EMISSION 
SYSTEM PURGE CONTROL VALVE CIRCUIT LOW, Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P0459

Evaporative Emission System Purge 
Control Valve Circuit High

<Ref. to EN(H4SO 2.0)(diag)-154, DTC P0459 EVAPORATIVE EMISSION 
SYSTEM PURGE CONTROL VALVE CIRCUIT HIGH, Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P0462

Fuel Level Sensor “A” Circuit Low

<Ref. to EN(H4SO 2.0)(diag)-156, DTC P0462 FUEL LEVEL SENSOR “A” 
CIRCUIT LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

DTC

Item

NOTE

EN(H4SO 2.0)(diag)-66

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P0463

Fuel Level Sensor “A” Circuit High

<Ref. to EN(H4SO 2.0)(diag)-156, DTC P0463 FUEL LEVEL SENSOR “A” 
CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0500

Vehicle Speed Sensor “A”

<Ref. to EN(H4SO 2.0)(diag)-156, DTC P0500 VEHICLE SPEED SENSOR 
“A”, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0512

Starter Request Circuit

<Ref. to EN(H4SO 2.0)(diag)-157, DTC P0512 STARTER REQUEST CIR-
CUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0513

Incorrect Immobilizer Key

<Ref. to IM(diag)-17, DTC P0513 INCORRECT IMMOBILIZER KEY, Diag-
nostic Procedure with Diagnostic Trouble Code (DTC).>

P0519

Idle Air Control System Performance

<Ref. to EN(H4SO 2.0)(diag)-159, DTC P0519 IDLE AIR CONTROL SYS-
TEM PERFORMANCE, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P0600

Serial Communication Link

<Ref. to EN(H4SO 2.0)(diag)-159, DTC P0600 SERIAL COMMUNICATION 
LINK, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0604

Internal Control Module Random 
Access Memory (RAM) Error

<Ref. to EN(H4SO 2.0)(diag)-160, DTC P0604 INTERNAL CONTROL MOD-
ULE RANDOM ACCESS MEMORY (RAM) ERROR, Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P0605

Internal Control Module Read Only 
Memory (ROM) Error

<Ref. to EN(H4SO 2.0)(diag)-161, DTC P0605 INTERNAL CONTROL MOD-
ULE READ ONLY MEMORY (ROM) ERROR, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0607

Control Module Performance

<Ref. to EN(H4SO 2.0)(diag)-162, DTC P0607 CONTROL MODULE PER-
FORMANCE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0638

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

<Ref. to EN(H4SO 2.0)(diag)-163, DTC P0638 THROTTLE ACTUATOR 
CONTROL RANGE/PERFORMANCE (BANK 1), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P0691

Fan 1 Control Circuit Low

<Ref. to EN(H4SO 2.0)(diag)-164, DTC P0691 FAN 1 CONTROL CIRCUIT 
LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0692

Fan 1 Control Circuit High

<Ref. to EN(H4SO 2.0)(diag)-164, DTC P0692 FAN 1 CONTROL CIRCUIT 
HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P0700

Transmission Control System (MIL 
Request)

<Ref. to EN(H4SO 2.0)(diag)-164, DTC P0700 TRANSMISSION CONTROL 
SYSTEM (MIL REQUEST), Diagnostic Procedure with Diagnostic Trouble 
Code (DTC).>

P0851

Park/Neutral Switch Input Circuit Low <Ref. to EN(H4SO 2.0)(diag)-165, DTC P0851 PARK/NEUTRAL SWITCH 

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

P0852

Park/Neutral Switch Input Circuit 
High

<Ref. to EN(H4SO 2.0)(diag)-170, DTC P0852 PARK/NEUTRAL SWITCH 
INPUT CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1134

A/F Sensor Micro-Computer Problem <Ref. to EN(H4SO 2.0)(diag)-175, DTC P1134 A/F SENSOR MICRO-COM-

PUTER PROBLEM, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1137

O2 Sensor Circuit (Bank1 Sensor1)

<Ref. to EN(H4SO 2.0)(diag)-177, DTC P1137 O2 SENSOR CIRCUIT 
(BANK1 SENSOR1), Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1160

Return Spring Failure

<Ref. to EN(H4SO 2.0)(diag)-180, 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(H4SO 2.0)(diag)-180, DTC P1492 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-180, DTC P1493 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-180, DTC P1494 EGR SOLENOID VALVE 
SIGNAL #2 CIRCUIT MALFUNCTION (LOW INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

DTC

Item

NOTE

EN(H4SO 2.0)(diag)-67

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P1495

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

<Ref. to EN(H4SO 2.0)(diag)-180, DTC P1495 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-180, DTC P1496 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-180, DTC P1497 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-181, DTC P1498 EGR SOLENOID VALVE 
SIGNAL #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(H4SO 2.0)(diag)-183, DTC P1499 EGR SOLENOID VALVE 
SIGNAL #4 CIRCUIT MALFUNCTION (HIGH INPUT), Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P1518

Starter Switch Circuit Low Input

<Ref. to EN(H4SO 2.0)(diag)-184, DTC P1518 STARTER SWITCH CIRCUIT 
LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P1521

Brake Switch Circuit Range/Perfor-
mance Problem (High Input)

<Ref. to EN(H4SO 2.0)(diag)-187, DTC P1521 BRAKE CIRCUIT RANGE/
PERFORMANCE PROBLEM(HIGH INPUT), Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1560

Back-up Voltage Circuit Malfunction

<Ref. to EN(H4SO 2.0)(diag)-189, DTC P1560 BACK-UP VOLTAGE CIR-
CUIT MALFUNCTION, Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1570

Antenna

<Ref. to IM(diag)-18, DTC P1570 ANTENNA, Diagnostic Procedure with 
Diagnostic Trouble Code (DTC).>

P1571

Reference Code Incompatibility

<Ref. to IM(diag)-20, DTC P1571 REFERENCE CODE INCOMPATIBILITY, 
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P1572

IMM Circuit Failure (Except Antenna 
Circuit)

<Ref. to IM(diag)-21, DTC P1572 IMM CIRCUIT FAILURE (EXCEPT 
ANTENNA CIRCUIT), Diagnostic Procedure with Diagnostic Trouble Code 
(DTC).>

P1574

Key Communication Failure

<Ref. to IM(diag)-24, DTC P1574 KEY COMMUNICATION FAILURE, Diag-
nostic Procedure with Diagnostic Trouble Code (DTC).>

P1576

EGI Control Module EEPROM

<Ref. to IM(diag)-25, DTC P1576 EGI CONTROL MODULE EEPROM, Diag-
nostic Procedure with Diagnostic Trouble Code (DTC).>

P1577

IMM Control Module EEPROM

<Ref. to IM(diag)-25, DTC P1577 IMM CONTROL MODULE EEPROM, 
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P1578

Meter Failure

<Ref. to IM(diag)-25, DTC P1578 METER FAILURE, Diagnostic Procedure 
with Diagnostic Trouble Code (DTC).>

P2100

Throttle Actuator Control Motor Cir-
cuit/Open

<Ref. to EN(H4SO 2.0)(diag)-190, DTC P2100 THROTTLE ACTUATOR 
CONTROL MOTOR CIRCUIT/OPEN, Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

P2101

Throttle Actuator Control Motor Cir-
cuit Range/Performance

<Ref. to EN(H4SO 2.0)(diag)-190, DTC P2101 THROTTLE ACTUATOR 
CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

P2102

Throttle Actuator Control Motor Cir-
cuit Low

<Ref. to EN(H4SO 2.0)(diag)-197, DTC P2102 THROTTLE ACTUATOR 
CONTROL MOTOR CIRCUIT LOW, Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

P2103

Throttle Actuator Control Motor Cir-
cuit High

<Ref. to EN(H4SO 2.0)(diag)-200, DTC P2103 THROTTLE ACTUATOR 
CONTROL MOTOR CIRCUIT HIGH, Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

P2109

Throttle/Pedal Position Sensor “A” 
Minimum Stop Performance

<Ref. to EN(H4SO 2.0)(diag)-202, DTC P2109 THROTTLE/PEDAL POSI-
TION SENSOR “A” MINIMUM STOP PERFORMANCE, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>

P2111

Throttle Actuator Control System - 
Stuck Open

<Ref. to EN(H4SO 2.0)(diag)-202, DTC P2111 THROTTLE ACTUATOR 
CONTROL SYSTEM - STUCK OPEN, Diagnostic Procedure with Diagnostic 
Trouble Code (DTC).>

DTC

Item

NOTE

EN(H4SO 2.0)(diag)-68

ENGINE (DIAGNOSTICS)

List of Diagnostic Trouble Code (DTC)

P2122

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

<Ref. to EN(H4SO 2.0)(diag)-203, DTC P2122 THROTTLE/PEDAL POSI-
TION 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(H4SO 2.0)(diag)-206, DTC P2123 THROTTLE/PEDAL POSI-
TION 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(H4SO 2.0)(diag)-208, DTC P2127 THROTTLE/PEDAL POSI-
TION 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(H4SO 2.0)(diag)-211, DTC P2128 THROTTLE/PEDAL POSI-
TION 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(H4SO 2.0)(diag)-213, DTC P2135 THROTTLE/PEDAL POSI-
TION SENSOR/SWITCH “A” / “B” VOLTAGE CORRELATION, Diagnostic 
Procedure with Diagnostic Trouble Code (DTC).>

P2138

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

<Ref. to EN(H4SO 2.0)(diag)-218, DTC P2138 THROTTLE/PEDAL POSI-
TION SENSOR/SWITCH “D” / “E” VOLTAGE CORRELATION, Diagnostic 
Procedure with Diagnostic Trouble Code (DTC).>

P2503

Charging System Voltage Low

<Ref. to EN(H4SO 2.0)(diag)-221, DTC P2503 CHARGING SYSTEM VOLT-
AGE LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

P2504

Charging System Voltage High

<Ref. to EN(H4SO 2.0)(diag)-222, DTC P2504 CHARGING SYSTEM VOLT-
AGE HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

DTC

Item

NOTE