Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

DTC P007B is Type B DTC.
The ECM commands reduced engine power.
The driver information center (DIC) or indicator may display reduced engine power.
Service Emission System message is displayed on the driver information center (DIC).
Diesel particulate filter (DPF) regeneration is inhibited.