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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 >> DTC P1427-P142A or P1437 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

P1427, P1428, P1429, and P142A 

The ECM detects the difference between the exhaust gas temperature and the engine coolant temperature is greater than 25°C (77°F) after an 8 h engine soak.

P1437 

The exhaust gas recirculation valve (EGR) determines that a thermal condition exists where the valve should be shut down for protection, but the ECM has determined that the condition is not plausible because none of the other engine hot conditions exist.

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