hey guys my check engine lite came on and i checked the codes it came out to be 0309 and 0705 i know 0705 is EVAP Control System but for 0309 it said undefined so i thought i did it wrong i went back and checked it again but still it came out to be 0309 any one have any idea what it can be?
and how do u fix the 0705 code

 

0705
Diagnostic Trouble Code 0705 points to a problem with the Evaporative Emission Control System.

This malfunction is detected when the EVAP control system has a leak or the EVAP control system does not operate properly. (EVAP = EVAPorative emissions.)
Possible causes include...
- incorrect fuel tank vacuum relief valve
- incorrect fuel filler cap
- fuel filler cap vent remains open or fails to close
- foreign matter caught in fuel filler cap
- a leak in the line between the intake manifold and the
EVAP Canister Vacuum Control Valve
- foreign matter caught in the EVAP CVCV
- leaks in the EVAP canister or fuel tank
- leaks in the EVAP purge line (pipe and rubber tube)
- EVAP purge line rubber tube bent
- blocked or bent rubber tube to EVAP control system pressure sensor
- loose or disconnected rubber tube
- EVAP CVCV and circuit
- EVAP Canister Purge Volume Control Solenoid Valve and circuit
- absolute pressure sensor
- tank fuel temperature sensor
- MAP/BARO switch solenoid valve and circuit
- blocked or bent rubber tube to MAP/BARO switch solenoid valve
- O-ring of EVAP CVCV is missing or damaged
- water separator
- EVAP canister saturated with water
- EVAP control system pressure sensor
- refueling EVAP vapor cut valve
- ORVR system leaks


This is a "jackpot" DTC. It points to so many things you don't know what to check. It is often combined with another DTC which is more specific and therefore more helpful.

 

just checked Haynes manual, 0309 is EVAP canister vent control valve is open--depending on year, emission model ( fed or cali ), it may or may not be controlled by vacuum or

 

oops, that's "or pcm (ecu)"

 

where do i find the evap canister vent control valve

 

Can anyone give info on the whole EVAP code and what to do.

 

on '93, '94, & '95 fed emission models, a vacuum operated purge control vave is mounted on top of the canister. on '95 cali emission models and all '96 and later models, an electronic purge control valve, controlled by the pcm is used. location of second valve unlisted in text.

 

how about a scanner code 1447?

 

ya, evap purgr flow monitor fault. also, a 0111.
I have a 0510, and a 0512, both tied into my downstream o2 sensor. is this anyway linked to my knock senser?
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Volcano Vaporizers