2001 S10 Codes not ready

Dave C

• 1050 Answers
• Posted on Mar 21, 2009

SOURCE: pcm not ready, NYS inspection, 1997 Saturn SL-1

Performing a GM OBDII Driving cycle:

1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup.
   Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
   
2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire, and - if closed loop is achieved- Fuel Trim.
   
3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
   
4. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
   
5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
   
6. Accelerate. Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
   
7. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
   
8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

SOURCE: not ready codes

There is a long drive cycle for this issue and it is a tsb so it should be free. Have them call hyundai tech line to get the drive cycle. Its so long i could never type it out for you. Its pages but it works. If the dealer gives you any problems call hyundai consumer affairs and they will take care of it for you. the number is in your owners manual or ask a sales person. Hyundai cansumer affairs will do anything to make you happy. Hope this helps good luck.

SOURCE: Codes need to be reset in my cars computer?

if you had it replaced it should have already been set however you can reset your cars computer by taking the positive battery cable off the battery and waiting 2-3 min and then touching the positive cable from the car to the negative cable which is still attached to the neg post on the battery for about 5 sec and the hooking it back up. that will reset the computer which would configure any new sensors. when the computer reads a bad code it bypasses that sensor so your car will run. it wont run to the best of its ability though - that's why you didn't pass an inspection. when you replaced the sensor the computer didn't notice because it already stopped reading that sensor when it went bad and doesnt know about the new one. when you reset the computer as i told you then it will read the new sensor and work properly.

SOURCE: 2001 gmc jimmy. replaced secondary air intake pump

i have been changing the big green fuse in a box near the inside wall on passenger side. you have to take the battery out to see this box. i have had the fuse replaced 3 times and the light went off so i went to have it inspected and it did not pass because of the pump they say. i don't want to have to pay 300.00 just for this part. pam

Phil Lovisek

• 726 Answers
• Posted on Jul 26, 2009

SOURCE: Nissan Sentra 2001 gxe with code p0420

You will need a new catalytic convertor assembly. Yours is below treshold efficiency in other words its "no good".If you have it replaced, ask the garage/dealer to give you the old one back. Its worth some cash if its full. It doesn't matter thet it failed. They are going after the mesh inside of it and that is worth some $$$$. May not be much , but better than nothing.