P0459
P0459: Evaporative Emission Control System Incorrect Purge Flow
📖 What Does P0459 Mean?
Symptoms
- • Rough idling
- • decreased fuel efficiency
- • sweet or gasoline-like odor
- • check engine light illuminated
Common Causes
- • Faulty EVAP canister purge valve
- • clogged EVAP canister vent hose
- • faulty EVAP canister purge valve solenoid
- • faulty fuel tank pressure sensor
Possible Solutions
1. Check and clean the EVAP canister vent hose. 2. Replace the EVAP canister purge valve solenoid. 3. Replace the EVAP canister purge valve. 4. Check and replace the fuel tank pressure sensor.
Fixing this on your car?
Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.
🚙 Get Vehicle-Specific Fix Guide
Select your vehicle to see a customized repair guide with exact parts and specifications:
❓ Common Questions About P0459
Can I drive with code P0459?
You can drive for a short time, but should address code P0459 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0459?
The estimated repair cost for code P0459 is between $100 and $500. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
Recommended Tools
Need a Pro?
Complex codes like P0459 can be tricky. Don't risk it if you're unsure.
Recommended Tool
Professional OBD2 Scanner
Read & clear codes, view live data, and reset service lights yourself.
View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with P0459
P0457: Evaporative Emission Control System Incorrect Purge Flow
P0458: Evaporative Emission Control System Incorrect Purge Flow
P0460: Emissions Control System Not Operating Within Normal Parameters
Fuel Level Sensor Circuit Range/Performance Problem
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system