Subaru Car 1998-05

2.5L H4 VIN 6 U/K 3

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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: 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: 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: 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: 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
 

Trouble Code: P1445



Air Assist Injector Solenoid Valve Malfunction

Possible Causes:



Check any other DTC on display
 
Check air assist injector solenoid valve operation
 
Check air by passes hoses
 
Check fuel injector
 

Trouble Code: P1505



Idle Control System Circuit High Input

Possible Causes:



Check throttle cable
 
Check output signal from ECM
 

Trouble Code: P1507



Idle Control System Malfunction (fail safe)

Possible Causes:



Check any other DTC on display
 
Check air intake system
 

Trouble Code: P1510



ISC Solenoid Valve Signal #1 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1511



ISC Solenoid Valve Signal #1 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1512



ISC Solenoid Valve Signal #2 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1513



ISC Solenoid Valve Signal #2 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1514



ISC Solenoid Valve Signal #3 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1515



ISC Solenoid Valve Signal #3 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1516



ISC Solenoid Valve Signal #4 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1517



ISC Solenoid Valve Signal #4 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1520



Cooling Fan Relay 1 Circuit High Input

Possible Causes:



Check output signal of ECM
 
Check for short circuit in radiator fan relay control circuit
 
Check main fan relay
 
Check sub fan relay
 
Check poor contact
 

Trouble Code: P1560



Back-Up Voltage Circuit Malfunction

Possible Causes:



Check input signal of ECM
 
Check harness between ECM and main fuse box connector
 
Check fuse number 13
 

Trouble Code: P1702



Automatic Transmission Diagnosis Input Signal Circuit Malfunction

Possible Causes:



Check harness between TCM and CCM
 

Trouble Code: P1704



2-4 Brake Timing Control Solenoid Valve Circuit Malfunction

Possible Causes:



Check 2-4 brake timing control solenoid valve circuit
 

Trouble Code: P1705



2-4 Brake Pressure Control Solenoid Valve (duty solenoid -D-) Circuit Malfunction

Possible Causes:



Check 2-4 brake pressure control solenoid valve (duty solenoid -D-) circuit
 

 
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