P043F OBD-II: Evaporative Emission System Leak Detection Reference Orifice
P043F Severity
Will P043F go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P043F?
The Leak Detection Pump contains a reference orifice tube. This tube restricts airflow to create a difference of pressure in the EVAP system. If the Orifice tube becomes clogged with debris, the engine computer (PCM) will set code P043F. The orifice tube is replaced as a unit with the leak detection pump module/assembly.
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What Does P043F Code Mean?
OBD-II Code P043F is defined as a Evaporative Emission System Leak Detection Reference Orifice
The Leak Detection Pump contains a reference orifice tube. This tube restricts airflow to create a difference of pressure in the EVAP system. If the Orifice tube becomes clogged with debris, the engine computer (PCM) will set code P043F. The orifice tube is replaced as a unit with the leak detection pump module/assembly.
Common Problems That Trigger the P043F Code
- Evap line leak/restriction
- Leak detection pump module failure
- Wiring issue
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