Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes

P1456 Honda

P1456 Honda - Evaporative Emissions Control System Leakage Fuel Tank

PDF
P1456 Honda Comments |  Add Comment
Possible causes
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
Help with Possible causes What does this mean?
Tech notes
Usually loose or bad fuel tank filler cap will triggered this codes. Retight fuel tank filler cap and erase code to repair problem.

There is a Honda factory service bulletin with information on how to diagnose the P1456 on the following Honda models:
1998 Honda Accord
1999 Honda Accord
2000 Honda Accord
1998-2000 Honda Accord Factory Service Bulletin OBDII Code p1456
Help with Tech Notes What does this mean?
When is the code detected?
The P1456 code is detected when the EVAP system has a very small leak.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P1456 Honda Description

The evaporative emission (EVAP) control system stores fuel vapor from the fuel tank in the EVAP canister temporarily to prevent it from escaping to the atmosphere and to enable it to be drawn into the engine by intake manifold vacuum and burned. In addition, the onboard refueling vapor recovery system (ORVR) stores fuel vapor generated when refueling in the EVAP canister.

The EVAP control system leak detection method improves the accuracy and frequency of the detection by determining faulty components and vapor leakage for each part. The EVAP control system (from the purge valve to the fuel tank) is divided into two parts. One is the "EVAP Canister Side" (from the EVAP two way valve to the purge valve) and the other is the "Tank Side" (from the EVAP two way valve to the fuel tank). There is 0.04 inch leak detection and 0.02 inch leak detection. If the 0.04 inch leak detection results are OK, the 0.02 inch leak detection runs.

P1456 Honda Information for specific Honda models
Need more help?
Do you need more help with the P1456 Honda code? ask a question to our users or search the top hand picked automotive forums for more information


(You will add more details to the question in the next step)
or
HONDA Technical Service Bulletins for P1456 code
2002 HONDA INSIGHT Fuel System, Other Details
2002 HONDA S2000 Fuel System, Other Details
2003 HONDA INSIGHT Fuel System, Other Details
2003 HONDA S2000 Fuel System, Other Details
2004 HONDA INSIGHT Fuel System, Other Details
More Bulletins Help with Technical Service Bulletins What does this mean?
Repair Shops Around Your Area
See More...
Need parts?
Need parts to fix this code? Search hundreds of stores at the same time and compare prices


Help Engine-Codes.com
Help us improve Engine-Codes.com. Leave a comment below or tell us if the information above help you fix the code. What are symptoms is your vehicle for the P1456 Honda code? Have you replaced any parts?
Any information is appreciated. Thanks
Engine-Codes.com Comments Powered by Disqus
Google +
Engine Light ON?

The Engine-Codes.com ELM327 WiFi Car Diagnostic connects to your Android phone, iPhone, iPad, or Windows computer from your vehicle.
Ask OBDII Question