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1999
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Sunfire L4-144 2.4L DOHC VIN T SFI
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Engine Scan Tool Data Definitions
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Rich/Lean to Lean/Rich Ratio Sen. 1
Rich/Lean to Lean/Rich Ratio Sen. 1
Range -
0:1-15.93:1
The Rich/Lean average is divided by the Lean/Rich average in order to find the
Oxygen Sensor
(O2S 1)
ratio.