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Engine Control System - DTC Diagnostics (5 Of 6)
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Troubleshooting
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DTC Troubleshooting: P1658 (2.0L Engine)
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Overview
DTC Troubleshooting: P1658 (2.0L Engine): Overview
If there is a power supply voltage input to the PCM despite the electronic throttle control system (ETCS) control relay is controlled OFF, the PCM determines an abnormality and stores the DTC.