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Home › Acura › 2025 › Integra Base › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnostics (P08B9 - P2135) › Troubleshooting › DTC P1658 (1.5L Engine) › Overview

DTC P1658 (1.5L Engine): Overview

If there is a power supply voltage input to the PCM despite the PGM-FI subrelay is controlled OFF, the PCM determines an abnormality and stores the DTC.