P1449 on Honda
EVAP Canister Vent Control Valve
P1449 on Honda vehicles indicates evap canister vent control valve. Au7o has documented this code across 1 Honda model — most commonly on CR-Z. P1449 is a manufacturer-specific EVAP emissions code (common on Ford and Mazda) referring to a problem with the EVAP canister vent control valve — sometimes called the canister drain cut valve. This valve opens and closes the charcoal canister's vent to the atmosphere so the system can both breathe and be sealed for leak testing. The PCM sets this code when it detects the valve is stuck, electrically faulted, or otherwise not performing as commanded. It generally doesn't affect drivability but turns on the check engine light and can cause an emissions test failure. Always verify the exact wording against the specific make's service data. Typical repair costs on Honda range from $1,000 to $3,000, depending on the specific model and root cause.
Common Causes of P1449
- •Faulty or stuck EVAP canister vent control valve/solenoid
- •Clogged vent valve or canister (dust, dirt, debris)
- •Wiring or connector fault in the vent valve circuit
- •Damaged or disconnected EVAP hoses/lines
- •Faulty fuel tank pressure sensor affecting EVAP monitoring
- •Vacuum leak in the EVAP system
- •PCM fault driving the valve (rare)
P1449 on Honda by Model
Honda CR-Z(1 issue)
- IMA Hybrid Battery Pack Degradation and Recalibration Issues2011-2016
The CR-Z uses Honda Integrated Motor Assist (IMA) system with a nickel-metal hydride (NiMH) battery pack located behind the rear seats. The battery pack degrades over time, losing capacity and causing the IMA system to become less effective at assisting acceleration and regenerating energy. The battery management system can also lose its calibration, causing incorrect state-of-charge readings and frequent IMA warning lights. In severe degradation, the IMA system shuts down entirely, leaving the car running on the 1.5L engine alone.
Looking for P1449 on a different make?
View P1449 across all makes →Frequently Asked Questions
What does P1449 mean on Honda?▼
P1449 stands for "EVAP Canister Vent Control Valve." P1449 is a manufacturer-specific EVAP emissions code (common on Ford and Mazda) referring to a problem with the EVAP canister vent control valve — sometimes called the canister drain cut valve. This valve opens and closes the charcoal canister's vent to the atmosphere so the system can both breathe and be sealed for leak testing. The PCM sets this code when it detects the valve is stuck, electrically faulted, or otherwise not performing as commanded. It generally doesn't affect drivability but turns on the check engine light and can cause an emissions test failure. Always verify the exact wording against the specific make's service data. On Honda specifically, this code is documented across 1 model.
What causes P1449 on Honda vehicles?▼
Common causes on Honda: Faulty or stuck EVAP canister vent control valve/solenoid, Clogged vent valve or canister (dust, dirt, debris), Wiring or connector fault in the vent valve circuit, Damaged or disconnected EVAP hoses/lines, Faulty fuel tank pressure sensor affecting EVAP monitoring. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1449 on a Honda?▼
Repair costs on Honda range from $1,000 to $3,000, depending on the specific model and root cause.
Which Honda models have P1449 documented?▼
Au7o has documented P1449 on 1 Honda model: CR-Z.