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Home >> Kia >> 2004 >> Amanti >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0139: O2 Sensor Circuit Slow Response >> General Information >> DTC Description
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DTC Description

If the rear HO2S signal's response time from rich to lean is longer than 1 second during fuel cut-off, the PCM judged as a fault and DTC is set.