Pulling the battery will shut off the light. BUT unless you have
repaired the problem that set the code it will come back anyway. If your
getting the vehicle inspected soon in an area that checks for codes tell
them you had the battery out.
This won't work for NYS inspection. Some codes are set after certain tests
are run. These tests run during certain driving cycles. Disconnecting the
battery makes these tests start over again. If you go in for inspection,
right after battery disconnect, any test that hasn't had the required amount
of drive cycles will show up as incomplete. You are only allowed 2 (3? not
sure of the number) incomplete tests before your inspection fails.
If you inform them before they hook up they will usually scan for the
drive cycles and either tell you to leave or if your OK they will run
Common Urban Legend (and false) is that if your vehicle has a "check
engine" code stored you can clear it by disconnecting the battery for 30
secs and then immediately pass an OBDII emissions test before the light
comes on again.
Yes, that will clear the code, but here in Texas (likely pther areas too)
you won't pass the emissions test.
Whenever you disconnect the battery or reset your ECU with an OBDII scan
tool your ECU will store several "not ready" codes indicating that a
recent reset has occurred.
It will take typically somewhere between 50~100 miles of driving for these
"not ready" codes to clear and change to "ready". The inspection station
should explain this to you and tell you to come back in 48 hours and put
at least 50~100 miles on the vehicle between now and then. They will also
usually give you a retest for free.
This should also be explained on a large placard on the wall of the
inspection station. The OBDII emissions test can also determine if your
"check engine" light is defective (i.e., bulb removed). It does this by
telling the inspector whether or not the MIL lamp is on. If their test
says it should be on but it isn't on, they will make you get it fixed
before they will pass you.
On Mon, 10 Oct 2005 01:38:48 GMT, firstname.lastname@example.org wrote:
Same here on the left coast.. the neighbor kid's little jimmy pickup got turned
away until he put a few hundred miles on it because the battery had been
He had sold the truck with the agreement that the stock sound system would be
put back in.. disconnected the battery to change sound systems and held up the
sale of the truck for 3 days until he could pass smog.. lol
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