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Home >> Mitsubishi >> 1987 >> Starion ESI-R >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> ECI CEC System >> Testing & Diagnosis >> Self-Diagnosis Test >> Diagnostic Code 1 (Oxygen Sensor)
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Diagnostic Code 1 (Oxygen Sensor)

If oxygen sensor signal does not change for 20 seconds or more in feedback range, check wire harness and connector, oxygen sensor and ECU.

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