Chevrolet P145D: Evaporative Emission (EVAP) System Leak Detection Pump Stuck On

What Does The Chevrolet P145D Code Mean?

This DTC detects an ELCP vacuum pump that is stuck on.

Conditions for setting the DTC:

• 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.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> KAIWEETS Digital Multimeter

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet Volt Hybrid DTC – OBDG01 HYBRID Diagnostics Document, page 162.