P1447 on 2011-2016 Honda CR-Z — EVAP System Purge Flow Monitoring
1 vehicles · 1 makes · $1,000-$3,000 repair
Most Reported On
P1447 is an OBD-II diagnostic trouble code meaning “EVAP System Purge Flow Monitoring.” This is a manufacturer-specific code (common on Nissan, Infiniti, and Honda) meaning the EVAP system's purge flow monitor did not detect the expected flow of fuel vapor during its self-test. The evaporative emissions system captures gasoline vapors and routes them into the engine to be burned, and this monitor checks that vapor is actually flowing when commanded. When too little or no purge flow is detected, the code sets. It points to a restriction, leak, or stuck component in the EVAP/purge path rather than an engine performance fault. This code is most commonly reported on 2011-2016 Honda CR-Z, with repair costs ranging from $1,000 to $3,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P1447, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P1447 mean?
P1447 stands for "EVAP System Purge Flow Monitoring." This is a manufacturer-specific code (common on Nissan, Infiniti, and Honda) meaning the EVAP system's purge flow monitor did not detect the expected flow of fuel vapor during its self-test. The evaporative emissions system captures gasoline vapors and routes them into the engine to be burned, and this monitor checks that vapor is actually flowing when commanded. When too little or no purge flow is detected, the code sets. It points to a restriction, leak, or stuck component in the EVAP/purge path rather than an engine performance fault.
What are the most common causes of P1447?
The most common causes of P1447 are: Faulty or stuck EVAP purge volume control valve/solenoid, Clogged or restricted EVAP/purge hoses or lines, Cracked, disconnected, or leaking vapor hoses, Faulty fuel tank pressure or vapor pressure sensor, Saturated or restricted charcoal canister, Loose or faulty gas cap / sealing fault, Damaged wiring or connector to the purge valve. The specific cause varies by vehicle.
How much does it cost to fix P1447?
Repair costs for P1447 range from $1,000 to $3,000, depending on the vehicle and root cause.
Which vehicles are affected by P1447?
Au7o has documented P1447 across 1 vehicle models from 1 manufacturers: Honda.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.