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Integra Base, Standard Trans
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Engine Control System Diagnostics (P2138 - U0301)
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Troubleshooting
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DTC Troubleshooting: P2A00 (1.5L Engine)
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Overview
DTC Troubleshooting: P2A00 (1.5L Engine): Overview
If the A/F sensor (Sensor 1) output voltage deviates greatly from normal oxygen concentration levels during deceleration, the PCM determines an abnormality and stores the DTC.