What is the reason for insufficient speed of the P1467 purge pump?

[McBeckett]

Purge pump failure may be caused by issues with the charcoal canister solenoid valve. Below is relevant information about purge pump failure: Impact of purge pump failure: Fuel vapor emissions are directly released into the atmosphere, causing air pollution. During normal engine operation, the engine may inhale pure air instead of fuel vapor, resulting in an overly lean air-fuel mixture. If the pump fails in a stuck or constantly open position, it can lead to excessive engine fuel consumption. Symptoms of failure: Difficulty starting the engine, and it is very prone to stalling. Frequent need for a second attempt to start, and the engine is very likely to stall again after starting. There may be unusual noises while driving the car. Specific symptoms include hearing a "clicking" sound sometimes when the engine is not idling. Increased fuel consumption, and a strong gasoline smell inside the car. The engine idle speed fluctuates irregularly, and there is a lack of power during acceleration. After the engine starts, the idle speed fluctuates rhythmically, and the vehicle lacks power during acceleration.

[MasonLee]

P1467 code indicates that the evaporative emission system purge pump speed is insufficient. I've encountered this issue several times while repairing cars. The main causes include the purge pump itself malfunctioning, such as motor aging or wear causing it to fail to rotate; wiring issues like loose connections, short circuits, or blown fuses; vacuum system leaks affecting airflow; a clogged charcoal canister blocking vapor passages; or incorrect signals from the control module sending unreasonable commands. If the pump speed is low, emissions will exceed standards and fuel consumption will increase, so it needs to be addressed quickly. It's recommended to first use a diagnostic tool to check real-time data streams to confirm the problem location, then inspect the pump, wiring, and tubing, cleaning or replacing parts as necessary. After repairs, perform a system test to ensure flow rates return to normal, which saves money and protects the environment. Regular maintenance of the EVAP system can also prevent similar faults from occurring.

[DelBrielle]

I've also encountered the trouble of the P1467 fault light coming on during daily driving. The slow operation of the purge pump usually has quite simple causes. It might be dirty with carbon deposits inside the pump, blocking it and making it turn slowly, or the wiring connectors could be rusty with poor contact; if the fuse is blown, the pump won't move at all. Additionally, an aging or clogged charcoal canister can affect the speed of vapor flow. For a DIY approach, you can first check if the corresponding fuse in the fuse box is intact, then unplug and replug the pump connector to see if it's secure. After solving the problem, driving becomes smoother and reduces odors. Remember, don't ignore small issues as they can lead to major repair costs and safety risks over time. It's recommended to have a professional shop check to avoid problems on the road.

[OJuliet]

P1467 is one of the common trouble codes. Low purge pump speed may originate from pump damage such as bearing seizure or insufficient motor output; electrical circuit issues like harness peeling, short circuits, or unstable voltage; delayed valve switching affecting airflow; or ECU control signal deviation errors. The solution is straightforward: use an OBD tool to read data, quickly locate the problem, and then repair or replace the relevant components. Preventive measures are important—keeping the EVAP system clean extends the pump's lifespan, enhances overall vehicle performance, and reduces exhaust pollution, making it both eco-friendly and practical.