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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0171 or P0172 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P0171 

The limit to correct a lean air/fuel ratio has been exceeded.

P0172 

The limit to correct a rich air/fuel ratio has been exceeded.

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