P04B4 - Refueling Vapor Control Valve Stuck Closed
P04B4 is a generic powertrain diagnostic trouble code indicating Refueling Vapor Control Valve Stuck Closed. It relates to the Auxiliary Emission Controls system.
DTC Breakdown (SAE J2012)
| System | Powertrain (P) |
| Type | Generic |
| Subsystem | Auxiliary Emission Controls |
| Fault Index | B4 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code P04B4 mean?
The dtc/">diagnostic trouble code P04B4 represents Refueling Vapor Control Valve Stuck Closed. This standard generic code points to a monitored fault condition in the vehicle's Powertrain network.
Detailed diagnostic guides and specific fix procedures for code P04B4 are currently being compiled. Always verify check engine warnings with a qualified mechanic.
Frequently Asked Questions about P04B4
What does P04B4 mean?
The diagnostic trouble code P04B4 represents Refueling Vapor Control Valve Stuck Closed. This standard generic code points to a monitored fault condition in the vehicle's Powertrain network.
What is the system for P04B4?
The P04B4 code is located in the vehicle's Powertrain network.