DTC P0443 Acura
Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction
Description
With the engine running, EVAP canister purge valve output duty at 2% to 98% the execution time is continuous and the duration time is 5 seconds or more. When the return signal does not change according to the EVAP canister purge valve duty cycle for a set time, the PCM detects a malfunction. The return signal does not change according to the EVAP canister purge valve output for at least 5 seconds. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Poor connections or loose terminals at the EVAP canister purge valve and the PCM
Open or short between the EVAP canister purge valve and the PCM
Open or short between the EVAP canister purge valve and the under-dash fuse relay box
EVAP canister purge valve
PCM may need to be updated with the latest software
Video Guide
Diagnostic Info
- DTC Code: P0443
- Brand: Acura