V90 L6-2.9L VIN 96 B6304S (1998)
Adjusting CO Content
Do not adjust CO content until all possible fault causes have been checked and remedied.
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Remove seal.
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Switch off the engine
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Drill two 2 mm (0.079 in) holes in the plug.
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Pull out plug with circlip ring pliers.
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Start the engine and idle it.
Adjust CO Content
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Adjust CO content to 1%.
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Turning adjustment screw:
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clockwise reduces the CO content.
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counter-clockwise increases CO content.
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The adjustment range is 15 turns.
Checking Voltage
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Adjust CO content to 1%.
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Engine idling.
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Go into scrolling values.
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Read off CO potentiometer value. Diagnostic trouble code EFI-211 will be stored after 20 seconds if this value exceeds 4.8 Volts or is below 0.2
Volts. This indicates that the engine is faulty.