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Home › Acura › 2023 › Integra Base, Standard Trans › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnostics (P2138 - U0301) › Troubleshooting › DTC Troubleshooting: P2A01 (1.5L Engine) › Overview

DTC Troubleshooting: P2A01 (1.5L Engine): Overview

If the secondary HO2S (Sensor 2) output voltage is lower than a specified value, the PCM determines an abnormality and stores the DTC.