How to Resolve Insufficient Speed of P1467 EVAP Purge Pump?
2 Answers
P1467 EVAP purge pump insufficient speed can be resolved by replacing the charcoal canister purge pump. Below is an introduction to the EVAP purge pump: Introduction: The EVAP purge pump is essentially the charcoal canister purge pump, and the probability of this component failing is very low. Function: Its main role is to blow fuel vapor from inside the charcoal canister into the intake pipe and regulate the concentration of the combustible air-fuel mixture. When the fuel vapor inside the charcoal canister accumulates to a certain level, the purge pump will blow the fuel vapor into the intake pipe. Eventually, this fuel vapor will re-enter the engine's combustion chamber for burning. If the speed of the purge pump does not meet the required standards, the force with which the fuel vapor is blown into the engine will decrease.
I've encountered the P1467 trouble code several times, which means the EVAP purge pump isn't spinning fast enough - basically, that little exhaust motor isn't running properly. There could be multiple causes, like the pump itself being old and jammed, loose wiring connections, a blown fuse, or a faulty control module. Last time my car had this issue, I first confirmed the code with an OBD scanner, then checked the corresponding fuse in the fuse box - it wasn't blown but replacing it didn't help. Next, I tested the circuit voltage and found it was low, indicating a power supply problem, which turned out to be a bad relay. The repair wasn't complicated - just replacing the pump and securing the wiring fixed it. This system handles fuel vapor recovery, and problems can lead to excessive emissions and increased fuel consumption, so don't delay repairs. I recommend always tightening the fuel cap properly when refueling to prevent vapor leaks. If the light comes on while driving, stop safely to check basic components rather than disassembling randomly. If you're not skilled at DIY repairs, taking it to a professional shop is much easier - a few hundred dollars can solve it, saving fuel costs in the long run.