Subaru Car 1998-05

2.5L H4 VIN 6 Std 3

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Trouble Code: P0753



Shift Solenoid -A- (shift solenoid 1) Electrical

Possible Causes:



Using a scan tool, read the data
 

Trouble Code: P0758



Shift Solenoid -B- (shift solenoid 2) Electrical

Possible Causes:



Using a scan tool, read the data
 

Trouble Code: P0760



Shift Solenoid -C- (shift solenoid 3) Malfunction

Possible Causes:



Check any other DTC on display
 
Check inhibiter switch circuit
 
Check shift solenoid 1 circuit
 
Check shift solenoid 3 circuit
 

Trouble Code: P0763



Shift Solenoid -C- (shift solenoid 3) Electrical

Possible Causes:



Check any other DTC on display
 

Trouble Code: P1100



Starter Switch Circuit Malfunction

Possible Causes:



Check starter motor
 

Trouble Code: P1101



Neutral Position Switch Circuit Malfunction

Possible Causes:



Check input signal for ECM
 
Check harness between ECM and transmission harness connector
 
Check inhibitor switch
 

Trouble Code: P1102



Pressure Sources Switching Solenoid Valve Circuit Malfunction

Possible Causes:



Check output signal from ECM
 
Check harness between ECM and pressure sources switching solenoid valve connector
 
Check valve
 
Check power supply to valve
 

Trouble Code: P1103



Engine Torque Control Signal Circuit Malfunction

Possible Causes:



Check input signal of ECM
 
Check harness between ECM and TCM connector
 

Trouble Code: P1106



Engine Torque Control Signal 2 Circuit

Possible Causes:



Check input signal of ECM
 
Check poor contact
 
Check harness between ECM and TCM connector
 

Trouble Code: P1110



Atmospheric Pressure Sensor Circuit Low Input

Possible Causes:



Using the a scan tool, check current data
 
Check poor contact
 
Check input signal for ECM
 
Check harness between ECM and atmospheric pressure sensor connector
 

Trouble Code: P1111



Atmospheric Pressure Sensor Circuit High Input

Possible Causes:



Using the a scan tool, check current data
 
Check input signal for ECM
 
Check harness between ECM and pressure sensor connector
 

Trouble Code: P1112



Atmospheric Pressure Sensor Circuit Range/Performance Problem

Possible Causes:



Check input signal for ECM
 
Check harness between ECM and pressure sensor connector
 
Check any other DTC on display
 
Check sensor filter
 
Using the a scan tool, check current data
 

Trouble Code: P1115



Engine Torque Control Cut Signal Circuit High Input

Possible Causes:



Check output signal from ECM
 
Check harness between ECM and TCM connector
 

Trouble Code: P1116



Engine Torque Control Cut Signal Circuit Low Input

Possible Causes:



Check output signal from ECM
 
Check harness between ECM and TCM connector
 

Trouble Code: P1120



Starter Circuit Switch High Input

Possible Causes:



Check operation of starter motor
 

Trouble Code: P1121



Starter Circuit Switch High Input

Possible Causes:



Check transmission type (manual transaxle)
 
Check input signal of ECM
 
Check poor contact
 
Check neutral position sensor
 
Check harness between ECM and sensor connector
 
Check any other DTC on display
 
Check harness between ECM and transmission harness connector
 
Check inhibitor switch
 
Check selector cable connection
 

Trouble Code: P1122



Pressure Sources Switching Solenoid Valve High Input

Possible Causes:



Check output signal of ECM
 
Check poor contact
 
Check harness between ECM and valve connector
 
Check valve
 

Trouble Code: P1130



Front Oxygen Sensor Circuit Malfunction

Possible Causes:



Check harness between ECM and sensor connector
 
Check poor contact
 

Trouble Code: P1131



Front Oxygen Sensor Circuit Malfunction (short circuit)

Possible Causes:



Check harness between ECM and sensor connector
 
Check output signal for ECM
 

Trouble Code: P1132



Front Oxygen Sensor Heater Circuit Low Input

Possible Causes:



Check any other DTC on display
 
Check power supply circuit of ECM
 
Check ground circuit of ECM
 
Check power supply of front sensor
 
Check sensor
 

Trouble Code: P1133



Front Oxygen Sensor Heater Circuit High Input

Possible Causes:



Check output signal from ECM
 
Check sensor heater current
 

Trouble Code: P1134



Front Oxygen Sensor Micro Computer Problem

Possible Causes:



Check any other DTC on display
 

Trouble Code: P1139



Front Oxygen Sensor 1 Heater Circuit Range/Performance Problem

Possible Causes:



Check harness between ECM and sensor connector
 
Check front sensor
 
Check poor contact
 

Trouble Code: P1141



Mass Air Flow Sensor Circuit Range/Performance Problem (high output)

Possible Causes:



Check any other DTC on display
 

Trouble Code: P1142



Throttle Position Sensor Circuit Range/Performance Problem (low input)

Possible Causes:



Check any other DTC on display
 

Trouble Code: P1143



Pressure Sensor Circuit range/Performance Problem (low input)

Possible Causes:



Using a scan tool, check current data
 
Check pressure sensor
 

Trouble Code: P1144



Pressure Sensor Circuit range/Performance Problem (high input)

Possible Causes:



Using a scan tool, check current data
 

Trouble Code: P1151



Rear Oxygen Sensor Heater Circuit High Input

Possible Causes:



Check input signal for ECM
 
Check any other DTC on display
 

Trouble Code: P1207



Air Assist Injector Solenoid Valve Circuit Low Input

Possible Causes:



Check output signal from ECM
 
Check power supply to valve
 
Check harness between ECM and valve connector
 
Check poor contact
 

Trouble Code: P1208



Air Assist Injector Solenoid Valve Circuit high Input

Possible Causes:



Check output signal from ECM
 

Trouble Code: P1325



Knock Sensor Circuit Low Input

Possible Causes:



Check harness between sensor and ECM connector
 
Check sensor
 
Check sensor installation
 
Check input signal for ECM
 

Trouble Code: P1400



Fuel Tank Pressure Control Solenoid Valve Circuit Low

Possible Causes:



Check output signal of ECM
 
Check poor contact
 
Check harness between valve and ECM connector
 
Check valve
 
Check power supply to valve
 

Trouble Code: P1420



Fuel Tank Pressure Control Solenoid Valve Circuit High

Possible Causes:



Check input signal of ECM
 
Check poor contact
 
Check ground circuit fuel level sensor
 
Check harness between valve and ECM connector
 
Check harness between combination meter and fuel pump connector
 
Check valve
 

Trouble Code: P1421



Exhaust Gas Recirculation Circuit High Input

Possible Causes:



Check output signal of ECM
 
Check poor contact
 
Check harness between EGR solenoid and ECM connector
 
Check EGR solenoid valve
 

Trouble Code: P1422



Evaporative Emission Control System Purge Control Valve Circuit High Input

Possible Causes:



Check output signal of ECM
 
Check poor contact
 
Check harness between purge control solenoid and ECM connector
 
Check purge control solenoid valve
 

Trouble Code: P1423



Evaporative Emission Control System Vent Control High Input

Possible Causes:



Check output signal of ECM
 
Check poor contact
 
Check harness between vent control solenoid valve and ECM connector
 
Check vent control solenoid valve
 

Trouble Code: P1440



Fuel Tank Pressure Control System Function Problem (low input)

Possible Causes:



Check fuel tank pressure control solenoid valve
 
Check fuel filler cap
 
Check fuel filler pipe seal
 
Check vent control solenoid valve
 
Check purge control solenoid valve
 

Trouble Code: P1441



Fuel Tank Pressure Control System Function Problem (high input)

Possible Causes:



Check fuel tank pressure control solenoid valve
 
Check fuel filler cap
 
Check fuel filler pipe seal
 
Check vent control solenoid valve
 
Check purge control solenoid valve
 
Check canister
 
Check fuel tank
 
Check for other mechanical problems
 

Trouble Code: P1442



Fuel level Sensor Circuit Range/Performance Problem 2

Possible Causes:



Check any other DTC on display
 

Trouble Code: P1443



Vent Control Solenoid Valve Function Problem

Possible Causes:



Check any other DTC on display
 
Check vent line hoses
 
Check drain valve operation
 

 
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