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ProMaster 2500
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Repair and Diagnosis (Single Page)
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3.6L - DTCS P0138 To P0340
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Diagnosis And Testing
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P0140-O2 Sensor 1/2 No Activity Detected
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Set Condition
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Set Condition
The Powertrain Control Module (PCM) detects that the Oxygen Sensor 1/2 signal switches from lean to rich less than 16 times within 20 seconds during monitoring.