P1456 Code - Evaporative Emissions Control System Leakage Fuel Tank
Quick Answer
The P1456 code indicates a problem with the vehicle's evaporative emissions control system, specifically related to a leak in the fuel tank. Common causes include Loose or damaged fuel cap, Malfunctioning evaporative emissions control system valve, Cracked or punctured fuel tank. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1456 indicates Evaporative Emissions Control System Leakage Fuel Tank.
- Common causes
- Common causes include Loose or damaged fuel cap, Malfunctioning evaporative emissions control system valve, Cracked or punctured fuel tank.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1456 Description
The P1456 code indicates a problem with the vehicle's evaporative emissions control system, specifically related to a leak in the fuel tank. The evaporative emissions control system is responsible for capturing and storing fuel vapors from the fuel tank to prevent them from being released into the atmosphere. When this system detects a leak in the fuel tank, it triggers the P1456 code.
Common Causes of P1456
- Loose or damaged fuel cap
- Malfunctioning evaporative emissions control system valve
- Cracked or punctured fuel tank
- Damaged fuel tank seal
- Faulty fuel tank pressure sensor
Symptoms of P1456
- Check engine light illuminated on the dashboard
- Decreased fuel efficiency
- Strong fuel odor near the vehicle
- Failed emissions test
- Hissing sound coming from the fuel tank area
How to Fix P1456
- Inspect the fuel cap and tighten or replace if necessary
- Check the evaporative emissions control system valve for proper operation and replace if faulty
- Perform a smoke test to locate any leaks in the fuel tank and repair as needed
- Replace the fuel tank pressure sensor if it is malfunctioning
- Clear the trouble codes and test drive the vehicle to ensure the issue has been resolved
Cost to Fix P1456
The cost of repairing a P1456 code can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for a P1456 code is typically between $150 and $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle type, and labor rates at the auto repair shop. It is advisable to consult with a professional mechanic for a more accurate cost estimate for this repair.
Tech Notes for P1456
User Submitted Video
Need more information about the P1456 code?
Need more information on how to fix the P1456 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1456 code diagnosed by a professional: Find a repair shop in your area
Code P1456 Information for Specific Makes
- P1456 Acura — Evaporative Emissions Control System Leakage Fuel Tank
- P1456 Audi — Exhaust Gas Temperature Control Bank 1 Limit Attained
- P1456 Honda — Evaporative Emissions Control System Leakage Fuel Tank
- P1456 Infiniti — Evaporative Emission Control System Leak Detected Small Leak
- P1456 Isuzu — EVAP System Leak Detected
- P1456 Nissan — Evaporative Emission Control System Leak Detected Small Leak
- P1456 Saab — A/C Compressor Clutch Relay High Output
- P1456 Volkswagen — Exhaust Gas Temperature Control Bank 1 Limit Attained
Frequently Asked Questions about P1456 Code
No Frequently Asked Questions about P1456 Code found.
Discuss the causes and fixes for P1456 OBDII Code
Code P1456 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.