Honda Car Error Code P1456
EVAP Fuel Tank Leak
Severity
DIY Difficulty
Est. Cost
$10 - $150
Est. Time
30 min
What Does P1456 Mean?
Honda car error P1456 means evap fuel tank leak. This is a moderate issue with a DIY difficulty of 2/5. Most repairs cost between $10 and $150.
Common Causes
Sensor malfunction
This is a common and usually minor cause of the P1456 error on Honda cars.
Minor blockage
This is a common and usually minor cause of the P1456 error on Honda cars.
Connection issue
This is a common and usually minor cause of the P1456 error on Honda cars.
Step-by-Step Fix
Power cycle the appliance
Unplug your Honda car for 60 seconds, then plug it back in. This clears temporary errors and resets the control board.
Check for obvious issues
Inspect your car for any visible problems such as loose connections, blockages, or unusual sounds. Many P1456 errors on Honda units are caused by simple issues.
Run a diagnostic cycle
Many Honda cars have a built-in diagnostic mode. Check your user manual for the specific key combination to enter diagnostics on your model.
Test related components
Based on the P1456 error meaning (EVAP Fuel Tank Leak), check the specific components involved. Use a multimeter to test for continuity if you are comfortable with electrical testing.
✅ Click each step to mark as completed (0/4 done)