2001 Suzuki Esteem Emmision control

Tiny
JERRYC013@YAHOO.COM
  • MEMBER
  • 2001 SUZUKI ESTEEM
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 75,000 MILES
Code # p0455, evaporative emmisions control system leak (large). What does this mean? Is it as simple as a gas cap or catalytic converter?

updated 4-15-09
The warning light did go off and the car past the emmisions test, but then the light came back on.
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Monday, March 9th, 2009 AT 6:08 PM

2 Replies

Tiny
DAVE H
  • EXPERT
DTC P0440: EVAP SYSTEM LEAK DETECTED, OR P0455: EVAP SYSTEM LEAK DETECTED (GROSS LEAK)
WARNING:This work must be performed in a well ventilated area away from any open flame.

Condition
With engine running, Engine Control Module (ECM) closes EVAP canister air valve and opens EVAP canister purge valve. If EVAP control system is okay, EVAP control system pressure detected by fuel pressure sensor is lowered. When EVAP control system pressure is lowered, ECM closes EVAP canister purge valve, leaving EVAP canister air valve closed. If EVAP system is okay, fuel tank pressure will increase to a predetermined level.
DTC P0440 is set when fuel tank pressure increase exceeds a predetermined value. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. DTC P0455 is set when fuel tank pressure change is less than predetermined. MIL is illuminated when ECM detects malfunction during first drive cycle. Possible causes are:
Missing, loose or malfunctioning fuel filler cap.
Loose or plugged vacuum hose.
Components mounted to fuel tank leaking in aria of mounting.
EVAP canister plugged.
EVAP canister purge valve malfunction.
EVAP canister air valve malfunction.
Fuel tank pressure control valve malfunction.
Fuel tank pressure sensor malfunction.
Fuel level sensor malfunction.
ECM malfunction.
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Sunday, March 22nd, 2009 AT 8:42 AM
Tiny
DAVE H
  • EXPERT
Most likely causes are loose or faulty fuel cap or a damaged/broken vacuum hose !

Possible causes are:
Missing, loose or malfunctioning fuel filler cap.
Loose or plugged vacuum hose.
Components mounted to fuel tank leaking in aria of mounting.
EVAP canister plugged.
EVAP canister purge valve malfunction.
EVAP canister air valve malfunction.
Fuel tank pressure control valve malfunction.
Fuel tank pressure sensor malfunction.
Fuel level sensor malfunction.
ECM malfunction.

Hope this helps
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Sunday, April 19th, 2009 AT 8:36 AM

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