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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P0016 - P049D)) >> Diagnostic Information And Procedures >> DTC P026A: Charge Air Cooler (CAC) Low Efficiency >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different variant/trim than selected.

The CAC efficiency is computed as a ratio between CAC inlet temperature - CAC outlet temperature and CAC inlet temperature - ambient air temperature.

The ECM detects that the average temperature reduction ratio of the CAC is less than 25% for greater than 20 s.

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