Subaru 2002 IMPREZA Service Manual page 1236

ENGINE (DIAGNOSTICS)
DTC
No.
P0123 Throttle position sensor circuit high
input
P0125 Insufficient coolant temperature for
closed loop fuel control
P0131 Front oxygen (A/F) sensor circuit
range/performance problem (low
input)
P0132 Front oxygen (A/F) sensor circuit
range/performance problem (high
input)
P0133 Front oxygen (A/F) sensor circuit
slow response
P0136 Rear oxygen sensor circuit malfunc-
tion [MT vehicles]
P0137 Rear oxygen sensor circuit low input
[AT vehicles]
P0138 Rear oxygen sensor circuit high input
[AT vehicles]
P0139 Rear oxygen sensor circuit slow
response
P0171 Fuel trim malfunction (A/F too lean)
P0172 Fuel trim malfunction (A/F too rich)
P0244 Wastegate control solenoid valve
malfunction (high input) [MT vehi-
cles]
P0244 Wastegate control solenoid valve
malfunction (fail-safe) [AT vehicles]
P0245 Wastegate control solenoid valve cir-
cuit low input
P0246 Wastegate control solenoid valve cir-
cuit high input
P0301 Cylinder 1 misfire detected
P0302 Cylinder 2 misfire detected
P0303 Cylinder 3 misfire detected
P0304 Cylinder 4 misfire detected
LIST OF DIAGNOSTIC TROUBLE CODE (DTC)
Item
<Ref. to EN(TURBO)-133, DTC P0123 — THROTTLE POSITION SENSOR
CIRCUIT HIGH INPUT —, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
<Ref. to EN(TURBO)-136, DTC P0125 — INSUFFICIENT COOLANT TEM-
PERATURE FOR CLOSED LOOP FUEL CONTROL —, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-138, DTC P0131 — FRONT OXYGEN (A/F) SENSOR
CIRCUIT RANGE/PERFORMANCE PROBLEM (LOW INPUT) —, Diagnos-
tic Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-140, DTC P0132 — FRONT OXYGEN (A/F) SENSOR
CIRCUIT RANGE/PERFORMANCE PROBLEM (HIGH INPUT) —, Diagnos-
tic Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-142, DTC P0133 — FRONT OXYGEN (A/F) SENSOR
CIRCUIT SLOW RESPONSE —, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
<Ref. to EN(TURBO)-144, DTC P0136 — REAR OXYGEN SENSOR CIR-
CUIT MALFUNCTION [MT VEHICLES] —, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-148, DTC P0137 — REAR OXYGEN SENSOR CIR-
CUIT LOW INPUT [AT VEHICLES] —, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>
<Ref. to EN(TURBO)-152, DTC P0138 — REAR OXYGEN SENSOR CIR-
CUIT HIGH INPUT [AT VEHICLES] —, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
<Ref. to EN(TURBO)-156, DTC P0139 — REAR OXYGEN SENSOR CIR-
CUIT SLOW RESPONSE —, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
<Ref. to EN(TURBO)-158, DTC P0171 — FUEL TRIM MALFUNCTION (A/F
TOO LEAN) —, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-159, DTC P0172 — FUEL TRIM MALFUNCTION (A/F
TOO RICH) —, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-162, DTC P0244 — WASTEGATE CONTROL SOLE-
NOID VALVE MALFUNCTION (HIGH INPUT) [MT VEHICLES] —, Diagnos-
tic Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-164, DTC P0244 — WASTEGATE CONTROL SOLE-
NOID VALVE MALFUNCTION (FAIL-SAFE) [AT VEHICLES] —, Diagnostic
Procedure with Diagnostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-166, DTC P0245 — WASTEGATE CONTROL SOLE-
NOID VALVE CIRCUIT LOW INPUT —, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
<Ref. to EN(TURBO)-170, DTC P0246 — WASTEGATE CONTROL SOLE-
NOID VALVE CIRCUIT HIGH INPUT —, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
<Ref. to EN(TURBO)-172, DTC P0301 — CYLINDER 1 MISFIRE
DETECTED —, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
<Ref. to EN(TURBO)-172, DTC P0302 — CYLINDER 2 MISFIRE
DETECTED —, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
<Ref. to EN(TURBO)-172, DTC P0303 — CYLINDER 3 MISFIRE
DETECTED —, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
<Ref. to EN(TURBO)-173, DTC P0304 — CYLINDER 4 MISFIRE
DETECTED —, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>
EN(TURBO)-76
Index