SES light: Evac syetm leak (small). Is this bad?
05-08-2007, 01:00 PM
#1
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SES light: Evac syetm leak (small). Is this bad? While driving normally (no WOTs) I got an SES light. Took it to autozone to get the codes read:
-Bank 2, Sensor 1
-Evac system, leak (small)
That's what the code reader showed. The guy at Autozone said to drive it around to see if the leak would get bigger so that I could find it and to just change out the OS2 sensor.
I drove it around and the car was normal. I didn't see any gasoline leaks or anything on the ground or in the engine.
Does this sound too bad? Do you guys think I'll mess anything up if I drive it more?
Here are the engine mods:
Hooker Full Exhaust
QTP E-Cutout
Comp "Custom" cam (231 237 .589 .595 112LSA)
Vigilante 3600 Stall
B&M Trans Cooler
Ls1 Underdrive pulley/Harmonic Balancer
Ls6 Intake
SLP LID
Mac Filter
Thanks in advance for the help.
-Bank 2, Sensor 1
-Evac system, leak (small)
That's what the code reader showed. The guy at Autozone said to drive it around to see if the leak would get bigger so that I could find it and to just change out the OS2 sensor.
I drove it around and the car was normal. I didn't see any gasoline leaks or anything on the ground or in the engine.
Does this sound too bad? Do you guys think I'll mess anything up if I drive it more?
Here are the engine mods:
Hooker Full Exhaust
QTP E-Cutout
Comp "Custom" cam (231 237 .589 .595 112LSA)
Vigilante 3600 Stall
B&M Trans Cooler
Ls1 Underdrive pulley/Harmonic Balancer
Ls6 Intake
SLP LID
Mac Filter
Thanks in advance for the help.
05-08-2007, 01:34 PM
#2
TECH Senior Member
Think you mean P0442 - EVAP small leak? First thing to check for that is a loose or bad seal on the gas cap. Friend of mine had it and wasn't the gas cap though, code kept coming back after replacing it. Ended up taking it to a shop and had them pressurize the EVAP system with smoke to find the leak. Repair was easy, finding the leak was the pain. You can get all the other possibilities by looking the code up for your year at gearchatter.com
05-08-2007, 07:59 PM
#3
Originally Posted by Local-heretic
While driving normally (no WOTs) I got an SES light. Took it to autozone to get the codes read:
-Bank 2, Sensor 1
-Evac system, leak (small)
That's what the code reader showed. The guy at Autozone said to drive it around to see if the leak would get bigger so that I could find it and to just change out the OS2 sensor.
-Bank 2, Sensor 1
-Evac system, leak (small)
That's what the code reader showed. The guy at Autozone said to drive it around to see if the leak would get bigger so that I could find it and to just change out the OS2 sensor.
05-09-2007, 06:08 PM
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The O2 sensor code for bank 2 sensor 1 can be from several codes. Either way it is usually the sensor itself. dont see wiring problems on them very often but is possable. The small evap leak will be a pain to find should bring it somewhere with a smoke machine. The gas cap will usually set a large leak code but that is a posability.
05-09-2007, 07:26 PM
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Originally Posted by ws602ta
The O2 sensor code for bank 2 sensor 1 can be from several codes. Either way it is usually the sensor itself. dont see wiring problems on them very often but is possable. The small evap leak will be a pain to find should bring it somewhere with a smoke machine. The gas cap will usually set a large leak code but that is a posability.
