P1467 on Buick: How to Diagnose & Fix
EVAP Purge Pump Underspeed
1 Buick model · 1 documented issue · $400-$850 repair
P1467 on Buick by model: symptoms, diagnosis and fix
The electric evaporative-emissions purge pump can fail. When it does, the check-engine light comes on and a trouble code sets. Applies to: 2020-2021 Buick Encore GX with the 1.2L LIH or 1.3L L3T engine are listed in GM special coverage N232395310; involvement is by VIN. Owners of 2022 and 2023 Encore GX also report purge pump replacements; those years are not listed in this coverage.
Common Symptoms
- Check engine light with fuel/gasoline odor
- Engine stalls without warning while driving
- Rough idle immediately after refueling
- Emissions readiness monitors will not set
- Vehicle fails state emissions inspection
How to Fix
Ask a GM dealer to check the VIN for special coverage N232395310. Under it, the dealer scans for codes; with code P1467, or when GM's diagnosis for a related purge pump code leads to it, the purge pump is replaced at no charge for 15 years or 150,000 miles, counted from the date the vehicle was first placed in service. For years outside the coverage, normal warranty rules apply.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (4)
- GM special coverage N232395310: Evaporative emission purge pump (2020-2021 Encore GX)manufacturer
- GM bulletin 23-NA-214: Purge pump replacement and part number interchangetsb
- NHTSA owner complaints, 2022 Buick Encore GX (ODI 11687416)nhtsa
- NHTSA owner complaints, 2023 Buick Encore GX (ODI 11761577, 11768557, 11720196)nhtsa
P1467 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P1467 mean on a Buick?
P1467 stands for "EVAP Purge Pump Underspeed." General Motors powertrain code. On LEV III-compliant GM engines an electric evaporative emission purge pump, with an integral pressure sensor, is used to raise purge volume and pull fuel vapour out of the EVAP canister. The ECM commands a target pump speed and compares it against the pump's actual reported speed. P1467 sets when actual purge pump speed and desired purge pump speed differ by more than a calibrated amount for longer than roughly five seconds — the pump is turning slower than commanded or not at all. On Buick it is documented across 1 model: Encore GX.
What are the most common causes of P1467?
The most common causes of P1467 are: Liquid fuel drawn into the purge pump, commonly from topping off / overfilling the fuel tank — a known GM failure with a service bulletin, Failed evaporative emission purge pump (seized or worn motor), Open, shorted or chafed purge pump control or feed wiring, Poor electrical connection or corrosion at the purge pump connector, Saturated or contaminated EVAP canister restricting flow, Blown fuse or lost power feed to the pump. The specific cause varies by vehicle.
How much does it cost to fix P1467 on a Buick?
Published repair estimates on Buick range from $400 to $850 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.