Subaru Car 1998-05

2.0L H4 - Std 4

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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: P1518



Starter Switch Circuit Low Input

Possible Causes:



Check operation of starter motor
 

Trouble Code: P1544



Exhaust Gas Temperature Too High

Possible Causes:



Check any other DTC on display
 
Check exhaust system
 

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: P1698



Engine Torque Control Cut Signal Circuit Malfunction (low input)

Possible Causes:



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

Trouble Code: P1711



Engine Torque Control Signal #1 Circuit Malfunction

Possible Causes:



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

Trouble Code: P1712



Engine Torque Control Signal #2 Circuit Malfunction

Possible Causes:



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

Trouble Code: P0107



Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Possible Causes:



Using a scan tool, check current data
 
Check poor contact
 
Check output signal of ECM
 
Check input signal of ECM
 
Check harness between ECM and sensor connector
 

Trouble Code: P0108



Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Possible Causes:



Check output signal of ECM
 
Check input signal of ECM
 
Check harness between ECM and sensor connector
 
Check harness between the sensor connector
 
Check poor contact
 

Trouble Code: P0171



System Too Lean Bank 1

Possible Causes:



Check any other DTC on display
 
Check exhaust system
 
Check air intake system
 
Check fuel pressure
 
Check fuel injector
 
Check coolant temperature
 
Check intake manifold pressure sensor
 
Check intake air temperature sensor
 

Trouble Code: P0172



System Too Rich Bank 1

Possible Causes:



Check any other DTC on display
 
Check exhaust system
 
Check air intake system
 
Check fuel pressure
 
Check fuel injector
 
Check coolant temperature
 
Check intake manifold pressure sensor
 
Check intake air temperature sensor
 

Trouble Code: P0451



Evaporative Emission Control System Pressure Sensor Malfunction

Possible Causes:



Check any other DTC on display
 
Check fuel filler cap
 
Check pressure vacuum line
 

Trouble Code: P1301



Misfire Detected (high temperature exhaust gas)

Possible Causes:



Check any other DTC on display
 
Using a scan tool, check current data
 

Trouble Code: P1312



Exhaust Gas Temperature Sensor malfunction

Possible Causes:



Check any other DTC on display
 
Using a scan tool, check current data
 

Trouble Code: P1510



ISC Solenoid Valve Signal No. 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 No. 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 No. 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 No. 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 No. 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 No. 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 No. 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 No. 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: P1711



Engine Torque Control Signal No. 1 Circuit Malfunction

Possible Causes:



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

Trouble Code: P1712



Engine Torque Control Signal No. 2 Circuit Malfunction

Possible Causes:



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

 
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