A:Evaporative emissions system diagnosis is never an easy thing. It's a complex series of components and hoses designed to capture hydrocarbons in gas tank fuel vapors, preventing them from ...

Some 2007-08 Honda Civic models may illuminate the Check Engine light and store trouble code P0456 (EVAP system leak) in the PCM. One likely cause, reports Honda, is an internal glitch in the canister ...

To make a definitive diagnosis, clear the stored code (s), then run an Automatic EVAP System Check with a scanner. If any of the codes reset, make sure the gas cap tightens correctly at the filler ...

On the background of the model year '94/'95 legal regulations the evaporative emission system and especially the purge flow management has to change significantly. A strategy is shown, which enables ...