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Engine Control System - DTC Diagnostics (2 Of 6)
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DTC Troubleshooting
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DTC Troubleshooting: P0139 (2.0L Engine)
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Overview
DTC Troubleshooting: P0139 (2.0L Engine): Overview
If the secondary HO2S (Sensor 2) output voltage does not change during stoichiometric feedback controlled, the PCM determines an abnormality and stores the DTC.