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.
2003 Porsche Boxster (986) F6-2.7LFACTORY OEM SERVICE PROCEDURE
Mode 5
Mode 5
Output of oxygen sensor data.
The values of the last oxygen sensor test carried out (test identification TID) can be read out for every oxygen sensor with its nominal values.
For the oxygen sensors ahead of the TWC (bank 1/2, sensor 1), the following TIDs are supported:
$81 Oxygen sensing actual value
Output of the oxygen sensing actual value.
Display between 0 and 1.99.
$82 Oxygen sensing nominal value
Output of the oxygen sensing nominal value.
Display between 0 and 1.99.
$83 Dynamic value of the oxygen sensor
Output of the dynamic value.
Display between 0 and 5.0.
$84 Oxygen sensing displacement
Oxygen sensing displacement (current share) due to pilot control.
Display between - 0.05 and 0.05.
For the oxygen sensors after the TWC (bank 1/2, sensor 2), the following TIDs are supported:
$01 Rich-lean threshold voltage
Programmed fixed value: e.g. 0.575 V.
$02 Lean-rich threshold voltage
Programmed fixed value: e.g. 0.575 V.
$07 Minimum voltage of oxygen sensor during the test
Minimum: e.g. 0.000 V
Maximum: e.g. 0.480 V
Test value: e.g. 0.280 V
$08 Maximum voltage of oxygen sensor during the test
Minimum: e.g. 0.480 V
Maximum: e.g. 1.245 V
Test value: e.g. 0.685 V
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
