AccessECU WRX 2002, User Manual, Page: 64 / 70

WRX Diagnostic Trouble Codes
Check engine light trouble codes can be read using your AccessPORT. If your
vehicle has a CEL light, the AccessPORT will provide you with the Diagnostic
Trouble Code causing the light to appear. The Trouble Codes are displayed using
the OBD-II standard format. To determine what a trouble code means, please
use the following list. For troubleshooting steps on how to repair the vehicle so
the code no longer appears, we suggest you contact your local Subaru dealer for
assistance. Subaru also offers very good Service Manuals with thorough trouble-
shooting steps which are available from your local dealer.
Subaru trouble codes for all 2002-2004 WRX models: Subaru trouble codes for all 2002-2004 WRX models:
Subaru trouble codes for all 2002-2004 WRX models: Subaru trouble codes for all 2002-2004 WRX models:
Subaru trouble codes for all 2002-2004 WRX models:
P0030 -
Front O2 Sensor Heater Control Circuit
P0031 - Front O2 Sensor Heater Control Circuit Low
P0032 - Front O2 Sensor Heater Control Circuit High
P0037 - Rear O2 Sensor Heater Control Circuit Low
P0038 - Rear O2 Sensor Heater Control Circuit High
P0068 - MAP/Barometric Pressure Circuit Range/Performance
P0101 - Mass Air Flow Circuit Range/Performance
P0102 - Mass Air Flow Circuit Low Input
P0103 - Mass Air Flow Circuit High Input
P0107 - MAP/Barometric Pressure Circuit Low Input
P0108 - MAP/Barometric Pressure Circuit High Input
P0111 - Intake Air Temperature Circuit Range/Performance
P0112 - Intake Air Temperature Circuit Low Input
P0113 - Intake Air Temperature Circuit High Input
P0117 - Engine Coolant Temperature Circuit Low Input
P0118 - Engine Coolant Temperature Circuit High Input
P0121 - Throttle Position Sensor Switch “A” Circuit Range/Performance
P0122 - Throttle Position Sensor Switch “A” Circuit Low Input
P0123 - Throttle Position Sensor Switch “A” Circuit High Input
P0125 - Insufficient Coolant Temperature for Closed Loop Fuel Control
P0128 - Coolant Thermostat
P0129 - Atmospheric Pressure Sensor Circuit Range/Performance
P0130 - Front O2 Sensor Circuit
P0133 - Front O2 Sensor Circuit Slow Response
P0134 - Front O2 Sensor Circuit No Activity Detected
P0137 - Rear O2 Sensor Circuit Low Voltage
P0138 - Rear O2 Sensor Circuit High Voltage
P0139 - Rear O2 Sensor Circuit Slow Response
P0171 - System too Lean
P0172 - System too Rich
P0181 - Fuel Temperature Sensor “A” Circuit Range/Performance
P0182 - Fuel Temperature Sensor “A” Circuit Low Input
P0183 - Fuel Temperature Sensor “A” Circuit High Input
P0230 - Fuel Pump Primary Circuit
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