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.
1997 Porsche Boxster AutomaticFACTORY OEM SERVICE PROCEDURE
DME 5.2.2 Diagnosis: General: Notes
Requirements for the OBD II System:
- Testing of the Three-Way Catalytic Converter efficiency.
- Recognition of combustion misfire
- Monitoring of the tank ventilation system.
- Monitoring of the secondary air injection.
- Monitoring of the adaptation limitation of the oxygen sensor system.
- Monitoring of the oxygen sensors.
- Monitoring of other emission relevant components (up to now OBD I component).
- Triggering the Malfunction Indicator Lamp (MIL) and fault memory.
- Protection against manipulation of control modules.
- Indication of the monitoring readiness (ready code).
- Indication of the Diagnostic Trouble Code.
- Storing of operation parameters in the event of a fault (freeze frame).
- Functional evidence of the OBD-system (trip, warm-up cycle, driving cycle).
- Standardized control module tester (Scan Tool).
- Standardized read out of operating data such as RPM, temperature, etc.
Factory Service Tools
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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.