When to run a complete smog test on a diesel?
All monitors must be complete on 1998-2006 diesel powered vehicles. Any two (2) monitors may be incomplete on 2007 and newer diesels. Some tests only run when the car sits overnight, or is allowed to cool down for several hours.
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.
When does Smog Check Come Out the tailpipe?
It does not test what is going on when the engine is cold, idling, decelerating, etc. Also, not all the smog a car makes comes out the tailpipe.
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.
Do you need a smog test for a 2000 car?
2000 model year and newer vehicles (except for vehicles 14,000 GVWR or greater) no longer require the tailpipe portion of the smog inspection.
How do you pass the smog test in California?
Without these required Emission Monitors your vehicle can not pass the smog test. You will be required to drive between 100-200 miles and over the course of a week, called a Drive Cycle, in order to “complete” the emission monitors and be allowed to pass the smog check.
How does the smog test work in AB 2289?
AB 2289 now requires the smog test inspection to rely on data from a vehicle’s own on board emissions computer to determine the vehicle’s harmful emissions production as opposed to using a smog machine to sample the vehicle’s emissions output from the tailpipe.
It does not test what is going on when the engine is cold, idling, decelerating, etc. Also, not all the smog a car makes comes out the tailpipe.