Positive Crankcase Ventilation (PCV) Valve Guide & Diagnostic Information
The PCV valve routes crankcase blow-by gases back into the intake manifold to prevent oil contamination and emissions.
Location on Vehicle
Mounted on the valve cover, connected to the intake manifold by a vacuum line.
Typical Symptoms of Failure
- Oil consumption
- Blue exhaust smoke
- Vacuum leak causing lean codes
Associated Diagnostic Trouble Codes
A malfunction in the Positive Crankcase Ventilation (PCV) Valve can trigger the following OBD-II fault codes:
Estimated Replacement Cost
Typical cost to replace the Positive Crankcase Ventilation (PCV) Valve: $40 - $120 (parts and labor).
Citations & Authority References
This technical part definition is cross-referenced with:
- EPA On-Board Diagnostics II Standard Specifications
- SAE J2012 Automotive Component Design Regulations