For Shop Owners

P1456 HONDA - Evaporative Emissions Control System Leakage Fuel Tank

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

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
  • EVAP purge control solenoid
  • EVAP canister
  • Fuel tank pressure sensor
What does this mean?

Tech notes

Usually, loose or bad fuel tank filler cap will trigger this codes. Retighten fuel tank filler cap and erase code to repair the 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

Troubleshooting DTC P1456 (EVAP system leakage [fuel tank system]) in a 20’03-20–04 Pilot? Pinch off all the hoses between the fuel filler neck and the fuel tank, and retest. If the leak stops, replace the fuel fill cap first. If you’ve still got the leak after replacing the fuel fill cap, then replace the fuel filler pipe. There’s an O-ring between the plastic and threaded part of the filler neck that may be leaking.





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Posted and Edit by kvjournal.ru 08-23-2016