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January 5th 2026

P1031 / SAAB

Injector 3 Low Output

Notes:

January 5th 2026

P1031 / MERCEDES-BENZ

Heated Oxygen Sensor Malfunction

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January 5th 2026

P1031 / CHEVROLET

HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1

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January 5th 2026

P1031 / CADILLAC

HO2S Heater Current Monitor Control Circuit Sensors 1

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January 5th 2026

P1031 / BUICK

HO2S Heater Current Monitor Control Circuit Sensors 1

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.