The P04FB diagnostic trouble code (DTC) refers to the Crankcase Ventilation Hose Connection Pressure Sensor Performance. This code indicates that the pressure sensor responsible for …

Mar 28, 2025 · The P04FB crankcase pressure sensor code might be common, but it’s not a mystery. With a proper diagnosis, the right part, and a little know-how, you can handle this repair yourself and …

Repair Information for P04FB code. Learn what Crankcase Ventilation Hose Connection Pressure Sensor Performance means, location and how to repair.

Jan 28, 2025 · Ron, I've been seeing lots of people with 3.0 Duramaxs experiencing the P04FB code assuming it's a phantom code or bad sensor. I want to inform that in my case, the sensor was doing …

Mar 13, 2025 · p04FB is a very common code and it's an easy fix, if you know how to do it. In this video, I show the location of the sensor and the simple task of replacing...

Nov 16, 2024 · I have the same P04FB code with our 2025 Equinox with 18,500 miles on it. The check engine light was on a couple of days, then went off, and then came back on. They diagnosed it as …

Aug 11, 2025 · 2025 Equinox RS… 6,000 miles dealing with the P04FB CODE. Dealership says it’s a known issue with a crank case ventilation sensor, they say there’s nothing wrong and they reset the …

May 11, 2022 · Preliminary Information Bulletin No.: PIP5841A Published date: 05/11/2022 PIP5841A Diagnostic Tip: DTC P04FB Due To Possible Condensation Freezing In Crankcase Pressure Sensor …

Jan 19, 2024 · We have a 2022 CT5 2.0l with the P04fb error code that has just appeared for the 4th time. We have brought this back to the dealer 3 times, each time claiming to have fixed the problem.

Jan 5, 2024 · PRELIMINARY INFORMATION Subject: Diagnostic Tip: DTC P04FB Due To Possible Condensation Freezing In Crankcase Pressure Sensor Assembly