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INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES (FAULT TREE)

DIAGNOSTIC
TROUBLE CODE
(DTC) NO.
DIAGNOSTIC ITEMS CHECK ITEMS (REMEDY) MEMORY REF-
ERENCE
PAGE
P0101
P0102
Volume Air Flow Circuit
Malfunction
•Harness and connector
(If harness and
connector are normal,
replace volume air flow
sensor assembly.)
Retained
P0106
P0107
P0108
Barometric Pressure Circuit
Malfunction
•Harness and connector
(If harness and
connector are normal,
replace volume air flow
sensor assembly.)
Retained
P0111
P0112
P0113
Intake Air Temperature
Circuit Malfunction
•Harness and connector
•Intake air temperature
sensor
Retained
P0116
P0117
P0118
Engine Coolant Temperature
Circuit Malfunction
•Harness and connector
•Engine coolant
temperature sensor
Retained
P0121
P0122
P0123
Throttle Position Circuit
Malfunction
•Harness and connector
•Throttle position sensor
•Closed throttle position
switch
Retained
P0125
P0128
Excessive Time to Enter
Closed Loop Fuel Control*
•Left bank O2 sensor
(front)
•Right bank O2 sensor
(front)
•O2 sensor harness and
connector
•Injector
Retained
P0132
P0133
P0134
O2 Sensor Circuit
Malfunction
(Bank 1 Sensor 1)
•Harness and connector
[If harness and
connector are normal,
replace right bank O2
sensor (front).]
Retained
P0135 O2 Sensor Heater Circuit
Malfunction
(Bank 1 Sensor 1)
•Harness and connector
•Right bank O2 sensor
(front) heater
Retained
P0137
P0138
P0139
O2 Sensor Circuit
Malfunction
(Bank 1 Sensor 2)
•Harness and connector
•Right bank O2 sensor
(rear)
Retained
P0141 O2 Sensor Heater Circuit
Malfunction
(Bank 1 Sensor 2)
•Harness and connector
•Right bank O2 sensor
(rear) heater
Retained
P0152
P0153
P0154
O2 Sensor Circuit
Malfunction
(Bank 2 Sensor 1)
•Harness and connector
[If harness and
connector are normal,
replace the left bank
O2 sensor (front).]
Retained
P0155 O2 Sensor Heater Circuit
Malfunction
(Bank 2 Sensor 1)
•Harness and connector
•Left bank O2 sensor
(front) heater
Retained
P0157
P0158
P0159
O2 Sensor Circuit
Malfunction
(Bank 2 Sensor 2)
•Harness and connector
•Left bank O2 sensor
(rear)
Retained
P0161 O2 Sensor Heater Circuit
Malfunction
(Bank 2 Sensor 2)
•Harness and connector
•Left bank O2 sensor
(rear) heater
Retained

P0171
P0174
System too Lean
Bank 1
Bank 2
•Volume air flow sensor
output frequency
•Injection
•Fuel pressure
•Intake air leaks
•Engine coolant
temperature sensor
•Barometric pressure
sensor
•O2 Sensor
•Exhaust manifold
cracks
Retained

P0173
P0175
System too Rich
Bank 1
Bank 2
Retained
P0201 Injector Circuit Malfunction -
Cylinder 1
•Harness and connector
•Injector
Retained
P0202 Injector Circuit Malfunction -
Cylinder 2
P0203 Injector Circuit Malfunction -
Cylinder 3
P0204 Injector Circuit Malfunction -
Cylinder 4
P0205 Injector Circuit Malfunction -
Cylinder 5
P0206 Injector Circuit Malfunction -
Cylinder 6
P0300 Random Misfire Detected* •Ignition coil
•Ignition power transistor
•Spark plug
•Ignition circuit
•Injector
•02 Sensor
•Compression pressure
•Timing belt
•Crankshaft position
sensor
•Air intake
•Fuel pressure
•Crankshaft position
sensor circuit and
connector
Retained
P0301 Cylinder 1 Misfire Detected* •Ignition coil
•Ignition power transistor
•Spark plug
•Ignition circuit
•Injector
•02 Sensor
•Compression pressure
•Timing belt
•Crankshaft position
sensor
•Air intake
•Fuel pressure
•Crankshaft position
sensor circuit and
connector
Retained
P0302 Cylinder 2 Misfire Detected*
P0303 Cylinder 3 Misfire Detected*
P0304 Cylinder 4 Misfire Detected*
P0305 Cylinder 5 Misfire Detected*
P0306 Cylinder 6 Misfire Detected*
P0325 Knock Sensor Circuit 1
Malfunction
•Harness and connector
(If harness and
connector are normal,
replace knock sensor.)
Retained
P0335 Crankshaft Position Sensor
Circuit Malfunction
•Harness and connector
(If harness and
connector are normal,
replace crankshaft
position sensor.)
Retained
P0340 Camshaft Position Sensor
Circuit Malfunction
•Harness and connector
(If harness and
connector are normal,
replace camshaft
position sensor.)
Retained
P0401 Exhaust Gas Recirculation
Flow Malfunction
•Harness and connector
•EGR valve
•EGR solenoid
•EGR valve control
vacuum
•Manifold differential
pressure sensor
Retained
P0403 Exhaust Gas Recirculation
Solenoid Malfunction
•Harness and connector
•EGR solenoid
Retained
P0421 Warm Up Catalyst Efficiency
Below Threshold (Bank 1)
•Right bank catalytic
converter deteriorated
•Right bank heated
oxygen sensor failed
•PCM failed
Retained
P0431 Catalyst Efficiency Below
Threshold (Bank 2)
•Left bank catalytic
converter deteriorated
•Left bank heated
oxygen sensor failed
•PCM failed
Retained
P0441 Evaporative Emission
Control System Incorrect
Purge Flow
•Harness and connector
•Evaporative emission
purge solenoid
Retained
P0442 Evaporative Emission
Control System Leak
Detected
•Harness and connector
•Evaporative emission
purge solenoid
•Evaporative emission
ventilation solenoid
•Vacuum hoses routing
Retained
P0443 Evaporative Emission
Control System Purge
Control Valve Circuit
Malfunction
•Harness and connector
•Evaporative emission
purge solenoid
Retained
P0446 Evaporative Emission
Control System Vent Control
Malfunction
•Harness and connector
•Evaporative emission
ventilation solenoid
Retained
P0451
P0452
P0453
Evaporative Emission
Control System Pressure
Sensor Malfunction
•Harness and connector
•Fuel tank differential
pressure sensor
Retained
P0455 Evaporative Emission
Control System Leak
Detected (Gross Leak)
•Fuel tank filler tube cap
loose
•Fuel vent valve
•Vacuum hose routing
•Evaporative emission
purge solenoid
•Evaporative emission
ventilation solenoid
•Fuel tank pressure
differential sensor
•Evaporation emission
canister
•Engine coolant
temperature sensor
•Intake air temperature
sensor
•Power steering pressure
switch
Retained
P0506
P0507
Idle Control System
Malfunction
•Harness connector
•Idle air control motor
Retained
P0510 Closed Throttle Position
Switch Malfunction
•Harness and connector
•Closed throttle position
switch
Retained
P0551 Power steering pressure
sensor circuit range/perfor-
mance
•Harness and connector
•Power steering pressure
switch
Retained
P0705 Transmission Range Sensor
Circuit Malfunction (RPNDL
Input)
•Harness and connector
•Park/Neutral position
switch
Retained
P0712
P0713
Transmission Fluid
Temperature Sensor Circuit
Malfunction
•Harness and connector
•Transaxle fluid
temperature sensor
Retained
P0715 Input/Turbine Speed Sensor
Circuit Malfunction
•Harness and connector
•Pulse generator
Retained
P0720 Output/Turbine Speed
Sensor Circuit Malfunction
•Harness and connector
•Pulse generator
Retained
P0731 Gear 1 Incorrect Ratio •Harness and connector
•Input or output shaft
speed sensor
•Transaxle control CPU
•PCM malfunction
Retained
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0736 Gear R Incorrect Ratio
P0741
P0742
P0743
Torque Converter Clutch
System Malfunction
•Harness and connector
•Torque converter clutch
solenoid
Retained
P0753 Shift Solenoid A Malfunction •Harness and connector
•Low-Reverse solenoid
Retained
P0758 Shift Solenoid B Malfunction •Harness and connector
•Underdrive solenoid
Retained
P0763 Shift Solenoid C Malfunction •Harness and connector
•Second solenoid
Retained
P0768 Shift Solenoid D Malfunction •Harness and connector
•Overdrive solenoid
Retained
P1101 Vacuum control solenoid
malfunction
•Harness and connector
•Vacuum control
solenoid
•PCM malfunction
Retained
P1102 Ventilation control solenoid
Malfunction
•Harness and connector
•Ventilation control
solenoid
•PCM malfunction
Retained
P1400 Manifold Differential
Pressure (MDP) Sensor
Circuit Malfunction
•Harness and connector
•MDP sensor
Retained
P1603 Battery Backup Circuit
Malfunction
•Harness and connector Retained
P1751 A/T Control Relay
Malfunction
•Harness and connector
•A/T control relay
Retained


NOTE: Do not replace the powertrain control module (PCM) until a thorough terminal check reveals there are no short/open circuits.
NOTE: Check that the PCM ground circuit is normal before checking for the cause of the problem.
NOTE: After the PCM detects a malfunction, a diagnostic trouble code is recorded when the engine is next started and the same malfunction is re-detected. However, for items marked with a "*", the diagnostic trouble code is recorded on the first detection of the malfunction.
NOTE: O2 : Heated oxygen sensor
NOTE: Sensor 1 : indicates sensors which are mounted closest to the engine and sensor 2 indicates sensors which are mounted at the position second closest to the engine.
NOTE: Bank 1 indicates the right bank side cylinder and bank 2 indicates the left bank side cylinder.