What does P1441 mean on a Chevy?

P1441. Evaporative Emission System Flow During Non-Purge. Applies to Silverado, Sierra, Tahoe, Blazer, S-10, Cavalier.

What causes P1441 on a Chevy?

Purge solenoid stuck open, the number one cause on GMT800 trucks and J-body cars Cracked or misrouted EVAP hoses drawing manifold vacuum during non-purge Failed EVAP canister vent valve not sealing the system Faulty fuel tank pressure sensor misreporting vacuum pull-down

How do I fix P1441 on a Chevy?

Command the purge valve closed with a Tech2/GDS2 scan tool and check for vacuum at the purge port Apply vacuum to the purge solenoid by hand; it must hold vacuum when de-energized Smoke-test the EVAP lines to rule out cracked hoses before replacing the solenoid Replace the purge solenoid (a low-cost part) only after it fails the vacuum-hold test

Code

P1441

Evaporative Emission System Flow During Non-Purge

Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: Silverado, Sierra, Tahoe, Blazer, S-10, Cavalier
Related: P0440 Evaporative Emission System on OBD Codes List

What it means

P1441. Evaporative Emission System Flow During Non-Purge. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Blazer, S-10, Cavalier.

Findings, check these first

Purge solenoid stuck open, the number one cause on GMT800 trucks and J-body cars
Cracked or misrouted EVAP hoses drawing manifold vacuum during non-purge
Failed EVAP canister vent valve not sealing the system
Faulty fuel tank pressure sensor misreporting vacuum pull-down

Standard procedure

Command the purge valve closed with a Tech2/GDS2 scan tool and check for vacuum at the purge port
Apply vacuum to the purge solenoid by hand; it must hold vacuum when de-energized
Smoke-test the EVAP lines to rule out cracked hoses before replacing the solenoid
Replace the purge solenoid (a low-cost part) only after it fails the vacuum-hold test

Look up another code

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Sources and review

Review: no source links are recorded for this entry.

Last updated 2026-09-13.

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