Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2004BAJA BASE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 140 (ENGINE (DIAGNOSTICS) (STI))OBD-II GENERAL SCAN TOOLOPERATIONHOW TO USE OBD-II GENERAL SCAN TOOL
2004 Subaru Baja Base, Standard
How To Use OBD-II General Scan Tool
2004 Subaru Baja Base, StandardSECTION How To Use OBD-II General Scan Tool
WARNING: This page is about a different car, the 2004 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
- Prepare a general scan tool (OBD-II general scan tool) required by SAE J1978.
- Open the cover and connect the OBD-II general scan tool to data link connector located in the lower portion of instrument panel (on the driver's side).
- Using the OBD-II general scan tool, call up DTC and freeze frame data.
OBD-II general scan tool functions consist of:
- MODE $01: Current powertrain diagnostic data
- MODE $02: Powertrain freeze frame data
- MODE $03: Emission-related powertrain DTC
- MODE $04: Clear/Reset emission-related diagnostic information
- MODE $06: Request on-board monitoring test results for non-continuously monitored systems
- MODE $07: Request on-board monitoring test results for continuously monitored systems
- MODE $09: Request vehicle information Read out the data according to repair procedures. (For detailed operation procedures, refer to the OBD-II General Scan Tool Operation Manual.)
NOTE:
For details concerning DTC, refer to the List of Diagnostic Trouble Code (DTC). < Ref. to
LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.