2001 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions

SUBARU DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION CHART

Code No. (1) Circuit Affected
P0031  Bank No. 1 (Right), No. 1 O2S (Front) Heater Circuit Low Input
P0032  Bank No. 1 (Right), No. 1 O2S (Front) Heater Circuit High Input
P0037  Bank No. 1 (Right), No. 2 O2S (Rear) Heater Circuit Low Input
P0038  Bank No. 1 (Right), No. 2 O2S (Rear) Heater Circuit Low Input
P0051  Bank No. 2 (Left), No. 1 O2S (Front) Heater Circuit Low Input
P0052  Bank No. 2 (Left), No. 1 O2S (Front) Heater Circuit High Input
P0106  Intake Manifold Pressure Sensor Circuit Range/Performance Problem
P0107  Intake Manifold Pressure Sensor Circuit Low Input
P0108  Intake Manifold Pressure Sensor Circuit High Input
P0111  Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
P0112  Intake Air Temperature (IAT) Sensor Circuit Low Input
P0113  Intake Air Temperature (IAT) Sensor Circuit High Input
P0117  Engine Coolant Temperature (ECT) Sensor Circuit Low Input
P0118  Engine Coolant Temperature (ECT) Sensor Circuit High Input
P0121  Throttle Position (TP) Sensor Circuit Range/Performance Problem (High Input)
P0122  Throttle Position (TP) Sensor Circuit Low Input
P0123  Throttle Position (TP) Sensor Circuit High Input
P0125  Engine Coolant Temperature Too Low For Closed Loop Fuel Control
P0128  Thermostat Malfunction
P0131  Bank No. 1 (Right), No. 1 O2S (Front) Circuit Range/Performance Problem (Low Input)
P0132  Bank No. 1 (Right), No. 1 O2S (Front) Circuit Range/Performance Problem (High Input)
P0133  Bank No. 1 (Right), No. 1 O2S (Front) Circuit Slow Response
P0136  Bank No. 1 (Right), No. 2 O2S (Rear) Circuit Malfunction
P0139  Bank No. 1 (Right), No. 2 O2S (Rear) Circuit Slow Response
P0151  Bank No. 2 (Left), No. 1 O2S (Front) Circuit Range/Performance Problem (Low Input)
P0152  Bank No. 2 (Left), No. 1 O2S (Front) Circuit Range/Performance Problem (High Input)
P0153  Bank No. 2 (Left), No. 1 O2S (Front) Circuit Slow Response
P0171  Fuel Trim No. 1 (Right Bank), Malfunction (Too Lean)
P0172  Fuel Trim No. 1 (Right Bank), Malfunction (Too Rich)
P0174  Fuel Trim No. 2 (Left Bank), Malfunction (Too Lean)
P0175  Fuel Trim No. 2 (Left Bank), Malfunction (Too Rich)
P0181  Fuel Temperature Sensor "A" Circuit Range/Performance Problem
P0182  Fuel Temperature Sensor "A" Circuit Low Input
P0183  Fuel Temperature Sensor "A" Circuit High Input
P0301  Cylinder No. 1 Misfire Detected
P0302  Cylinder No. 2 Misfire Detected
P0303  Cylinder No. 3 Misfire Detected
P0304  Cylinder No. 4 Misfire Detected
P0305  Cylinder No. 5 Misfire Detected
P0306  Cylinder No. 6 Misfire Detected
P0327  Knock Sensor (KS) No. 1 (Right Bank), Circuit Low Input
P0328  Knock Sensor (KS) No. 1 (Right Bank), Circuit High Input
P0332  Knock Sensor (KS) No. 2 (Left Bank), Circuit Low Input
P0333  Knock Sensor (KS) No. 2 (Left Bank), Circuit High Input
P0335  Crankshaft Position (CKP) Sensor Circuit Malfunction
P0336  Crankshaft Position (CKP) Sensor Circuit Range/Performance Problem
P0340  Camshaft Position (CMP) Sensor Circuit Malfunction
P0341  Camshaft Position (CMP) Sensor Circuit Range/Performance Problem
P0400  EGR System Malfunction
P0420  Catalyst System Efficiency Below Threshold
P0442  EVAP System Control Circuit Malfunction
P0444  EVAP System Purge Control Valve Circuit Low Input
P0445  EVAP System Purge Control Valve Circuit High Input
P0447  EVAP System Vent Control Circuit
P0448  EVAP System Vent Control Circuit High Input
P0451  EVAP System Pressure Sensor Range/Performance Problem
P0452  EVAP System Pressure Sensor Low Input
P0453  EVAP System Pressure Sensor High Input
P0461  Fuel Level Sensor Circuit Range/Performance Problem
P0462  Fuel Level Sensor Circuit Low Input
P0463  Fuel Level Sensor Circuit High Input
P0464  Fuel Level Sensor Circuit Intermittent Input
P0480  Cooling Fan Relay No. 1 Circuit Low Input
P0483  Cooling Fan Function Problem
P0500  Vehicle Speed Sensor (VSS) Malfunction
P0506  Idle Control System RPM Lower Than Expected
P0507  Idle Control System RPM Higher Than Expected
P0508  Idle Control System Circuit Low Input
P0509  Idle Control System Circuit High Input
P0512  Starter Switch Circuit High Input
P0604  Internal Control Module Memory Check Sum Error
P0661  Induction Valve Control Solenoid Circuit Low Input
P0662  Induction Valve Control Solenoid Circuit High Input
P0703 (2) Brake Switch Input Malfunction
P0705 (2) Transmission Range Sensor Circuit Malfunction (A/T)
P0710 (2) Transmission Fluid Temperature Sensor Circuit Malfunction (A/T)
P0715 (2) Torque Converter Turbine Speed Sensor Circuit Malfunction (A/T)
P0720 (2) Output Speed Sensor (VSS No. 2) Circuit Malfunction (A/T)
P0725 (2) Engine Speed Input Circuit Malfunction
P0731 (2) Gear 1 Incorrect Ratio
P0732 (2) Gear 2 Incorrect Ratio
P0733 (2) Gear 3 Incorrect Ratio
P0734 (2) Gear 4 Incorrect Ratio
P0741 (2) Torque Converter Clutch System Malfunction (A/T)
P0743 (2) Torque Converter Clutch System (Lock-Up Duty Solenoid) Electrical (A/T)
P0748 (2) Pressure Control Solenoid (Line Pressure Duty Solenoid) Electrical (A/T)
P0753 (2) Shift Solenoid "A" (No. 1) Electrical (A/T)
P0758 (2) Shift Solenoid "B" (No. 2) Electrical (A/T)
P0778 (2) 2-4 Brake Pressure Control Solenoid Valve Circuit Malfunction
P0785 (2) 2-4 Brake Timing Control Solenoid Valve Circuit Malfunction
P1110  Atmospheric Pressure Sensor Circuit Low Input
P1111  Atmospheric Pressure Sensor Circuit High Input
P1112  Atmospheric Pressure Sensor Circuit Range/Performance Problem
P1130  Bank No. 1 (Right), No. 1 O2S (Front) Circuit Malfunction (Open Circuit)
P1131  Bank No. 1 (Right), No. 1 O2S (Front) Circuit Malfunction (Short Circuit)
P1134  Front O2S Micro-Computer Problem
P1135  Bank No. 2 (Left), No. 1 O2S (Front) Circuit Malfunction (Open Circuit)
P1136  Bank No. 2 (Left), No. 1 O2S (Front) Circuit Malfunction (Short Circuit)
P1139  Bank No. 1 (Right), No. 1 O2S (Front) Heater Circuit Range/Performance Problem
P1140  Bank No. 2 (Left), No. 1 O2S (Front) Heater Circuit Range/Performance Problem
P1142  Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)
P1146  Pressure Sensor Circuit Range/Performance Problem (High Input)
P1400  Fuel Tank Pressure Control Solenoid Valve Circuit Low Input
P1420  Fuel Tank Pressure Control Solenoid Valve Circuit High Input
P1443  EVAP System Vent Control Function Problem
P1480  Cooling Fan Relay No. 1 Circuit High Input
P1507  Idle Control System Malfunction (Fail-Safe)
P1518  Starter Switch Circuit Low Input
P1560  Back-Up Voltage Circuit Malfunction
P1590  Neutral Position Switch Circuit High Input (A/T)
P1591  Neutral Position Switch Circuit Low Input (A/T)
P1594 (2) Automatic Transmission Diagnosis Input Signal Circuit Malfunction
P1595 (2) Automatic Transmission Diagnosis Input Signal Circuit Low Input
P1596 (2) Automatic Transmission Diagnosis Input Signal Circuit High Input
P1698 (2) Engine Torque Control Cut Signal Circuit Low Input
P1699 (2) Engine Torque Control Cut Signal Circuit High Input
P1700 (2) Throttle Position (TP) Sensor Circuit Malfunction (A/T)
P1701 (2) Cruise Control Set Signal Circuit Malfunction (A/T)
P1703 (2) Low Clutch Timing Control Solenoid Valve Circuit Malfunction (A/T)
P1711 (2) Engine Torque Control Signal No. 1 Circuit Malfunction
P1712 (2) Engine Torque Control Signal No. 2 Circuit Malfunction
(1) Some codes are two-trip detection logic code(s). For more information, see TWO-TRIP DETECTION LOGIC  under SELF-DIAGNOSTIC SYSTEM.
(2) Covered in entirety in appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.
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