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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Engine Controls And Fuel - 1.8L (LKN) - DTC P0446-DTC P31BF And Symptoms) >> Diagnostic Information and Procedures >> Symptoms - Engine Controls >> Symptoms Description

Symptoms Description

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Symptoms cover conditions that are not covered by DTCs. Certain conditions can cause multiple symptoms. These conditions are listed together under Symptoms Testing. Conditions that may only cause specific symptoms are listed separately under Additional Symptoms Tests.

However, symptoms which affect the internal combustion engine (ICE) of a typical gas powered vehicle may not be noticeable on the ICE. For the ICE, symptoms such as, hesitation, sag, stumble, sluggishness, surging, and even engine stalling, are buffered by the hybrid propulsion system, which is designed to smooth out ICE irregularities. Even when the battery pack is depleted and the ICE is forced to run in order to sustain the charge, the battery pack should still have enough retained power to perform this buffering function. Refer to Hybrid Modes of Operation Description for more information.

Perform the symptoms testing before using the additional symptoms testing.

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