![]() The dealership wants $130 to reset the monitor. Are these times important? Is it an "at least X" or "exactly X"? How much wiggle room is there?ģ) can this be simulated just by stepping on the gas pedal without moving, or is the speedometer readings a critical part of this reset process?Ĥ) is there an alternate drive cycle that I could try for a 2002 Sienna? one step says to maintain speed for 5 minutes, on the repeat it is maintain for 2 minutes. ![]() Which leads in to the first question:ġ) how important is "start from cold" to this drive cycle? I have to drive 20 minutes just to get to someplace I can do the actual driving part of the drive cycle!ġb) if cold start is important, how long do I have to wait after driving 20 minutes for the engine to cool down enough to qualify as cold start?Ģ) how important are the timings involved. It is damned difficult to find a place where you can do this driving pattern in california! I finally found a frontage road that barely qualifies. I am using an Innova 3020b to check codes and monitor status. One of the monitors got reset, but not the cat monitor. turn car on, accel to 40.55, 1/4 throttle, maintain for 2 min accel to 40.55, 1/4 throttle, maintain for 5 minħ. (I am typing this from memory, so if I get the details wrong it is probably on me not the original list):ģ. Last night, I tried a drive cycle I found listed for a 2002 Toyota Sienna (my vehicle). I have a few questions about the drive cycle, after I post the one I went by: Went BACK to the smog check station after doing the long, slow, drive they recommended and two of them were still not reset: cat. This, of course, resets all of the monitor functions. One suggestion was to reset the computer by disconnecting the battery, which I did, and the P1150 did go away. Replaced them with non-Denso and got P1155 (meaning the sensor itself was bad), then got Denso and still got P1150 (what it was sensing was bad).
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