2006 Trouble Codes p0002, 3, 8, & 0300
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From: Alexandria Va
2006 Trouble Codes p0002, 3, 8, & 0300
Have a Cobalt 2006 with these codes.
About a year ago, car, after warmed up, started "stuttering" at stopsigns with no power and, though the dash readout didn't go above 200 degrees, it smelled hot.
Local mechanic replaced the throttle body (With imbedded idle solonoid) and the problem went away.
Yeserday it came back!!!!!
Friend used Scan II tool and found, cold, B2AAA, B2A00, B0800 which he reset and engne light went out. Car drove fine for about 10 miles, (avg 24 mpg)then, light started flashing, no power, low mpg, shaking near idle, no codes, but "Pending codes" were P0002, P0003, P0008, & P0300, also "open loop". Shut down and restarted couple times with no change.
I suspect a loose wire and that the car is entering a "limp home" mode.
Where do I start?
Larry
About a year ago, car, after warmed up, started "stuttering" at stopsigns with no power and, though the dash readout didn't go above 200 degrees, it smelled hot.
Local mechanic replaced the throttle body (With imbedded idle solonoid) and the problem went away.
Yeserday it came back!!!!!
Friend used Scan II tool and found, cold, B2AAA, B2A00, B0800 which he reset and engne light went out. Car drove fine for about 10 miles, (avg 24 mpg)then, light started flashing, no power, low mpg, shaking near idle, no codes, but "Pending codes" were P0002, P0003, P0008, & P0300, also "open loop". Shut down and restarted couple times with no change.
I suspect a loose wire and that the car is entering a "limp home" mode.
Where do I start?
Larry
Last edited by Larry_too; Oct 6, 2013 at 2:47 PM. Reason: Spelling & date corection
Thread Starter
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From: Alexandria Va
Last edited by Larry_too; Oct 1, 2013 at 3:13 PM.
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Thread Starter
CF Beginner
Joined: Sep 2013
Posts: 14
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From: Alexandria Va
Cobalt Trouble codes
Update:
Removed and checked air cleaner and rubber/plastic induction parts.
Checked fluids, all were ok (brake a bit low and topped off).
Started this morning, ran about a block, then loss of power and rough idle as before. (Yesterday it went 10 miles without problems).
No engine codes were set though.
HELP!!!!!!
Larry
Removed and checked air cleaner and rubber/plastic induction parts.
Checked fluids, all were ok (brake a bit low and topped off).
Started this morning, ran about a block, then loss of power and rough idle as before. (Yesterday it went 10 miles without problems).
No engine codes were set though.
HELP!!!!!!
Larry
Thread Starter
CF Beginner
Joined: Sep 2013
Posts: 14
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From: Alexandria Va
Cobalt 2006 Limp Home
Tried again this afternoon. Engine light was on at start, was several body codes?????? B0800, B2A00, B2AAA. Cleared those and found a few "pending codes" but no flashing "check engine light" and the loop was closed.
Drove about a mile with no problem and good power, and then the loss of power occured but intermittent, loop would open and the car would "limp" a while, no power, low MPG, shakes at idle, etc but no "check engine light", Codes P0001, P0302, P0002, P0004, P0005.
When the loop closed, the car ran fine but, why is it going open loop??? No set codes at all, just the pending codes.
I'm still puzzled, any ideas????? I sprayed water all around the intake (looking for leaks) but it made no difference so likely no leaks.
I'm looking for a can of contact cleaner next.
Larry
Drove about a mile with no problem and good power, and then the loss of power occured but intermittent, loop would open and the car would "limp" a while, no power, low MPG, shakes at idle, etc but no "check engine light", Codes P0001, P0302, P0002, P0004, P0005.
When the loop closed, the car ran fine but, why is it going open loop??? No set codes at all, just the pending codes.
I'm still puzzled, any ideas????? I sprayed water all around the intake (looking for leaks) but it made no difference so likely no leaks.
I'm looking for a can of contact cleaner next.
Larry
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It goes into closed once certain criteria are made like the 02 sensors reaching operating temp... its my understanding that it can go back to open loop under certain circumstances like throttle position and temperature...
Administrator
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I would suggest you eliminate the basics... Check fuel pressure. Pull the plugs and inspect and verify gap.. I know some things may not seem applicable but it will give you some things to rule out....
