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Home >> Pontiac >> 2000 >> Sunfire L4-2.2L VIN 4 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> Rich/Lean Transition

Rich/Lean Transition

Range 0-255 Counts
The PCM counts the number of times the Oxygen Sensor (O2S 1) goes from a high voltage (rich exhaust) to a low voltage (lean exhaust) within a 100 second period. Rich/Lean transition should increment when the vehicle is operating within the Conditions for Setting in DTC P0133 or DTC P1133.
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