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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> 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, P249E, or P2BAD >> DTC Descriptor

DTC Descriptor

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P20EE

NOx Catalyst Efficiency Below Threshold

P249D

Closed Loop Reductant Injection Control At Limit - Flow Too Low

P249E

Closed Loop Reductant Injection Control At Limit - Flow Too High

P2BAD

Exhaust Nitrogen Oxides Concentration High - Unknown Reason

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