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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 P145C or P145D >> 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.

P145C 

The EVAP leak detection pump is commanded ON during the first reference orifice vacuum measurement and the stabilized EVAP leak detection pump pressure sensor vacuum reading is less than 0.1 kPa (0.01 PSI) for greater than 6 min.

Or

The EVAP leak detection pump is commanded ON during the second reference orifice vacuum measurement and the stabilized EVAP leak detection pump pressure sensor vacuum reading is less than 0.1 kPa (0.01 PSI) for greater than 30 s.

P145D 

The EVAP leak detection pump is commanded OFF for the first time and the EVAP leak detection pump switching valve has transitioned from vent to not venting, pump position. The difference between an initial EVAP leak detection pump pressure sensor reading and a second EVAP leak detection pump pressure sensor reading is greater than 1 kPa (0.14 PSI) for greater than 8 s.

Or

The EVAP leak detection pump is commanded OFF for the second time and the EVAP leak detection pump pressure sensor vacuum reading is greater than 1.18 kPa (0.17 PSI) for greater than 14 s.

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