Subaru Car 1998-05

2.5L H4 - Auto 7

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Trouble Code: P1596



Automatic Transaxle Diagnosis Input Signal Circuit High Input

Possible Causes:



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

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: P1699



Engine Torque Control Cut Signal Circuit Malfunction (high input)

Possible Causes:



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

Trouble Code: P1700



Throttle Position Sensor Circuit Malfunction For Automatic Transmission

Possible Causes:



Check any other DTC on display
 
Check throttle position sensor circuit
 

Trouble Code: P1701



Cruise Control Set Signal Circuit Malfunction For Automatic Transmission

Possible Causes:



Check harness between TCM and CCM
 
Check input signal for TCM
 

Trouble Code: P1702



Automatic Transmission Diagnosis Input Signal Circuit Malfunction

Possible Causes:



Check harness between TCM and CCM
 

Trouble Code: P1703



Low Clutch Timing Control Solenoid Valve Circuit Malfunction

Possible Causes:



Check low clutch timing control solenoid valve circuit
 

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
 

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: P1722



Automatic Transmission Diagnosis Input Signal Circuit High Input

Possible Causes:



Check for identification circuit malfunction
 
Check harness between ECM and TCM connector
 
Check output signal for ECM
 
Check poor contact
 

Trouble Code: P1742



Automatic Transmission Diagnosis Input Signal Circuit Malfunction

Possible Causes:



Check for identification circuit malfunction
 
Check driving conditions (shift control pattern)
 
Check output signal for ECM
 
Check accessories (car phone, CB installation, etc)
 

Trouble Code: P2004



Tumble Generated Valve System 1 (valve open)

Possible Causes:



Check any other DTC on display
 
Check tumble generator valve (RH)
 

Trouble Code: P2005



Tumble Generated Valve System 2 (valve open)

Possible Causes:



Check any other DTC on display
 
Check tumble generator valve (RH)
 

Trouble Code: P2006



Tumble Generated Valve System 1 (valve closed)

Possible Causes:



Check any other DTC on display
 
Check tumble generator valve (RH)
 

Trouble Code: P2007



Tumble Generated Valve System 2 (valve closed)

Possible Causes:



Check any other DTC on display
 
Check tumble generator valve (RH)
 

Trouble Code: P2008



Tumble Generated Valve System 1 Circuit Malfunction (open)

Possible Causes:



Check harness between ECM and tumble generator valve actuator connector
 
Check poor contact
 

Trouble Code: P2009



Tumble Generated Valve System 1 Circuit Malfunction (closed)

Possible Causes:



Check harness between ECM and tumble generator valve actuator connector
 

Trouble Code: P2011



Tumble Generated Valve System 2 Circuit Malfunction (short)

Possible Causes:



Check harness between ECM and tumble generator valve actuator connector
 

Trouble Code: P2016



Tumble Generated Valve Position Sensor 1 Circuit Low

Possible Causes:



Using the a scan tool, check current data
 
Check input signal for ECM
 
Check harness between ECM and tumble generator valve position sensor connector
 
Check harness between ECM and throttle position sensor connector
 
Check poor contact
 

Trouble Code: P2017



Tumble Generated Valve Position Sensor 1 Circuit High

Possible Causes:



Using a scan tool, check current data
 
Check harness between tumble generator valve position sensor and ECM connector
 

Trouble Code: P2021



Tumble Generated Valve Position Sensor 2 Circuit Low

Possible Causes:



Using a scan tool, check current data
 
Check input signal for ECM
 
Check harness between ECM and tumble generator valve position sensor connector
 
Check poor contact
 

Trouble Code: P2022



Tumble Generated Valve Position Sensor 2 Circuit High

Possible Causes:



Using a scan tool, check current data
 
Check harness between tumble generator valve position sensor and ECM connector
 
Check poor contact
 

Trouble Code: P2088



OCV Solenoid Valve Signal -A- Circuit Open (bank 1)

Possible Causes:



Check harness between ECM and oil flow control solenoid valve
 
Check oil flow control solenoid valve
 

Trouble Code: P2089



OCV Solenoid Valve Signal -A- Circuit Short (bank 1)

Possible Causes:



Check harness between ECM and oil flow control solenoid valve
 
Check oil flow control solenoid valve
 

Trouble Code: P2092



OCV Solenoid Valve Signal -A- Circuit Open (bank 2)

Possible Causes:



Check harness between ECM and oil flow control solenoid valve
 
Check oil flow control solenoid valve
 

Trouble Code: P2093



OCV Solenoid Valve Signal -A- Circuit Short (bank 2)

Possible Causes:



Check harness between ECM and oil flow control solenoid valve
 
Check oil flow control solenoid valve
 

Trouble Code: P2096



Post Catalyst Fuel Trim System Too Lean Bank 1

Possible Causes:



Check any other DTC on display
 
Using the a scan tool, check front oxygen sensor data
 
Using the Subaru scan tool, check rear oxygen sensor data
 
Check exhaust system
 
Check air intake system
 
Check fuel pressure
 
Check engine coolant temperature sensor
 
Check Mass air flow and intake air temperature
 
Check harness between ECM and front oxygen sensor connector
 
Using harness between ECM and rear oxygen sensor connector
 

Trouble Code: P2097



Post Catalyst Fuel Trim System Too Rich Bank 1

Possible Causes:



Check any other DTC on display
 
Using a scan tool, check front oxygen sensor data
 
Using a scan tool, check rear oxygen sensor data
 
Check exhaust system
 
Check air intake system
 
Check fuel pressure
 
Check engine coolant temperature sensor
 
Check Mass air flow and intake air temperature
 
Check harness between ECM and front oxygen sensor connector
 
Using harness between ECM and rear oxygen sensor connector
 

Trouble Code: P2101



Throttle Actuator Control Range/Performance Bank 1

Possible Causes:



Check electronic throttle control relay
 
Check power supply of electronic control relay
 
Check harness between ECM and electronic throttle control relay
 
Check sensor output
 
Check poor contact
 
Check harness between ECM and electronic throttle control
 
Check sensor power supply
 
Check for short in ECM
 
Check sensor output
 
Check harness between ECM and electronic throttle control motor
 
Check electronic throttle control motor harness
 
Check ground circuit
 
Check electronic throttle control
 

Trouble Code: P2102



Throttle Actuator Control Motor Circuit Low

Possible Causes:



Check electronic throttle control relay
 
Check power supply of electronic control relay
 
Check harness between ECM and electronic throttle control relay
 

Trouble Code: P2103



Throttle Actuator Control Motor Circuit High

Possible Causes:



Check electronic throttle control relay
 
Check for short circuit of the relay and power supply
 
Check harness between ECM and electronic throttle control relay
 

Trouble Code: P2109



Throttle/Pedal Position Sensor -A- Minimum Stop Performance

Possible Causes:



Check electronic throttle control relay
 
Check power supply of electronic control relay
 
Check harness between ECM and electronic throttle control relay
 
Check sensor output
 
Check poor contact
 
Check harness between ECM and electronic throttle control
 
Check sensor power supply
 
Check for short in ECM
 
Check sensor output
 
Check harness between ECM and electronic throttle control motor
 
Check electronic throttle control motor harness
 
Check ground circuit
 
Check electronic throttle control
 

Trouble Code: P2122



Throttle/Pedal Position Sensor -D- Circuit Low Input

Possible Causes:



Check accelerator pedal position sensor output
 
Check poor contact
 
Check harness between ECM and accelerator pedal position sensor
 
Check power supply of accelerator pedal position sensor
 
Check sensor
 

Trouble Code: P2123



Throttle/Pedal Position Sensor/Switch -D- Circuit High Input

Possible Causes:



Check accelerator pedal position sensor output
 
Check poor contact
 
Check harness between ECM and accelerator pedal position sensor
 

Trouble Code: P2127



Throttle/Pedal Position Sensor/Switch -E- Circuit Low Input

Possible Causes:



Check accelerator pedal position sensor output
 
Check poor contact
 
Check harness between ECM and accelerator pedal position sensor
 
Check sensor
 

Trouble Code: P2128



Throttle/Pedal Position Sensor/Switch -E- Circuit High Input

Possible Causes:



Check accelerator pedal position sensor output
 
Check poor contact
 
Check harness between ECM and accelerator pedal position sensor
 
Check sensor
 

Trouble Code: P2135



Throttle/Pedal Position Sensor/Switch -A-/-B- Voltage Rationality

Possible Causes:



Check sensor output
 
Check poor contact
 
Check harness between ECM and electronic throttle control
 
Check sensor power supply
 
Check for short circuit in ECM
 
Check sensor output
 
Check electronic throttle control harness
 

Trouble Code: P2138



Throttle/Pedal Position Sensor/Switch -D-/-E- Voltage Rationality

Possible Causes:



Check accelerator pedal position sensor output
 
Check poor contact
 
Check harness between ECM and sensor
 
Check sensor
 
Check sensor output
 

 
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