1999 Honda Civic evap control system

1999 HONDA CIVIC
150,000 MILES • 4 CYL • FWD • AUTOMATIC
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MULESPINE8
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  • 1 POST
my car has just passes smog and 1 day after: check engine light came on with code p1457,and p0302,so is this a leak in my evap system and how can be fixed
Feb 21, 2009 at 12:51 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Hi mulespine8,

DTC P1456 & P1457: EVAP SYSTEM LEAK DETECTED

If either DTC P1456 or DTC P1457 sets, check for:

A faulty fuel filler cap.
Proper vacuum hose connections.
Fuel tank leak.
EVAP control canister vent shut valve malfunction.
EVAP control canister vent shut valve circuit malfunction.
EVAP purge control solenoid valve malfunction.
EVAP purge control solenoid valve circuit malfunction.
EVAP by-pass solenoid valve malfunction.
EVAP by-pass solenoid valve circuit malfunction.
Fuel tank pressure sensor malfunction.
Fuel tank pressure sensor circuit malfunction.
EVAP control canister malfunction.
ORVR vent shut valve malfunction.
ORVR vapor recirculation valve malfunction.
Faulty throttle body.
Feb 22, 2009 at 5:43 AM
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