NHTSA ID Number: 11016984
Manufacturer Communication Number: PIP5841E
TSB/Document Date: 2025-04-15
Summary
This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
Bulletin No.: PIP5841E
Published date: 04/9/2025
Preliminary Information
PIP5841E Diagnostic Tip: DTC P04FB Due To Possible Condensation
Freezing In Crankcase Pressure Sensor Assembly
Proactive
Models
Brand: Model: Model Years:
Buick
Envision 2021
Cadillac CT4
2020
Cadillac CT5
2020
Cadillac CT6
2019
Cadillac XT4
2019
Cadillac XT5
2020
Cadillac XT6
2020
Chevrolet Blazer 2020
GMC
Acadia 2020
- 2025
- 2025
- 2025
-
2025
2025
2025
2025
2024
VIN:
Engine: Transmissions:
from to
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
All
All 2.0 LSY All
Involved Region or
Country:
North America
Condition:
DTC P04FB Failed current or history
Cause:
Possible moisture or condensation freezing in Crankcase Pressure
Sensor assembly
Correction
If you encounter a vehicle setting DTC P04FB in temperatures below freezing that has
failed current or history complete the published SI diagnostics for the DTC.
If unable to establish a root cause. Remove the PCV/Crankcase Pressure Sensor and hose
assembly and inspect for presence of frozen moisture/condensation in the Crankcase
Pressure sensor and hose assembly.
If frozen moisture is present, replacement of the Crankcase Pressure Sensor will not be
necessary. Please allow the Crankcase pressure sensor and hose assembly to thaw out and
the moisture to drain completely. Use a combination of light compressed air and a shop
towel to remove any residual condensation/moisture.
Note: If the ambient air temperatures have not been below freezing but moisture is still
present in the Crankcase pressure sensor. Remove the moisture using a combination of
light compressed air and a shop towel.
Once completed clear any remaining DTC's using GDS and evaluate.
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor
operation. Reference the Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor
Operation
Description
Labor
Time
*4088908
PCV/Crankcase Pressure Sensor and Hose Assembly Clean and
Drain
.3 Hr.
*This is a unique Labor Operation for Bulletin use only.
Version History
Version
Modified
5
02/23/2022 - Created on.
05/11/2022 - Updated correction to not replace
crankcase pressure sensor
01/27/2023- Updated to include 2023 Model Year.
03/15/2023- Updated to include unique labor
operation
01/05/2024 Updated information to include 2024
Model Year.
02/27/2025 Updated informaton to include 2025
Model Year
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TSB/Document ID: PIP5841E
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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