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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (4 Of 5)) >> Diagnostic Information and Procedures >> DTC P20EE, P249D, or P249E >> Conditions for Setting the DTC

Conditions for Setting the DTC

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P20EE 

The selective catalytic reduction measured NOx conversion efficiency is lower than expected.

P249D, P249E 

The ECM detects an out of range high or low reductant dosing control factor.

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