SOURCE: The check engine light on my Chevy Silverado cam
That is laymans terms. That is why it is in your manual. You ,need to get up to speed ,on todays somewhat high tech vehicles.
Now you need to go to a shop that does EVAP testing, with a smoke machine,if necessary,or at least put a scanner on it ,and replace the vent valve solenoid,if bad.(again laymans part teminology,
SOURCE: my 2000 chevy venture i have two engine codes
Clean the carbon out of the intake, and the EGR ports, use some carb cleaner and gently use a coat hanger for the smaller hole, toothbrush for the rest. They are probably clogged. Take the EGR valve back off to do this and the air tube off of the throttlebody, you can open the butterfly by hand and clean that too while you are in there.
SOURCE: Fault Codes:P0449: Evaporative Emiss Contrl
Check your gas cap. I know this sounds dumb but that is usually what triggers an evap. malfunction
SOURCE: code p0449 came on in
I am sending you a little info on your problem.. Hope it helps.. Best of Luck..
2006 Chevrolet Colorado LT 2.8L, Vin 8, Eng Cfg L4
Customer
Concern:
Current Powertrain Control Module (PCM) code P0449.
Tests/Procedures:
1. Inspect the evaporative vent solenoid, near the fuel tank
and evaporative canister. Look for wire damage, corrosion.
2. Check
voltage to the solenoid on the Orange wire. It should be battery voltage,
backprobing. If not, check the voltage level on the CAN VENT fuse, #69 in the
Underhood Bussed Electrical Center (UBEC).
3. Cycle the evaporative vent
solenoid with a scan tool. The solenoid should click.
4. Backprobe the
White wire, pin 22 of the blue PCM connector. The voltage on this wire should be
battery voltage with the solenoid off and close to 0 volts with the solenoid
on.
Potential
Causes:
Evaporative Vent Solenoid
Solenoid
Wiring
Tech
Tips:
The evaporative vent solenoid is attached to the side of the
evaporative canister above the spare tire.
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