How do I pass smog after new battery?

WAIT A BIT AFTER DISCONNECTING THE BATTERY If you recently jump-started or replaced your car battery, wait at least one week before going in for a California smog check. When a car’s battery dies or is disconnected, the computer resets, erasing the internal emission monitors required to pass a smog test.

What should I do if my car failed the smog test?

Take the car for a weekend road trip and see some sights. Plan on driving across the Golden Gate, then tour a bit of downtown. That should do it. The ECM (engine control module or computer) checks it’s own emissions on all 1996 and newer cars by Federal law.

Can a DTC erase a smog check monitor?

If your car has recently been repaired for a problem that set a DTC (check engine on) and the technician cleared the DTC, he also erased the monitors. Also, if battery has been disconnected, replaced or needed a jump-start, the monitors may be erased.

Why is my smog check OBD 2 incomplete?

There are several reasons why the monitors may be incomplete. If your car has recently been repaired for a problem that set a DTC (check engine on) and the technician cleared the DTC, he also erased the monitors. Also, if battery has been disconnected, replaced or needed a jump-start, the monitors may be erased.

Can a car pass with only one smog monitor?

Note that a car can pass with some incomplete monitors…a maximum of one on 1999 and earlier cars, and only one ( The Evaporative System monitor) on model year 2000 and later gasoline powered automobiles. All monitors must be complete on 1998-2006 diesel powered vehicles.

What should I know about a failed smog test?

Failed smog test. OBD-II monitors not ready. Needs to be Q: Failed smog test. OBD-II monitors not ready. Needs to be reset Failed smog test. OBD-II monitors not ready. Need to be reset. How much will this cost? My car has 165000 miles. My car has an automatic transmission. Hello.

Can a car pass a smog test after battery was changed?

I was told it could not pass a smog test until the computer was reset; at a cost of $135.00.This car has always past before. What difference would this make if they are sticking the tester in the exhaust pipe?