2001 chevy s-10 pickup again. Not Ready codes. This time I am
2001 chevy s-10 pickup again. This time I am getting "not ready" codes on obd2 reader. codes registered for O2 sensor, Oxygen sensor heater, evaporative system and secondary air system. I had the battery disconnected and learned that the computer erases the codes with no power. Will driving it more than two trips restore the codes and eliminate the "not ready" report?
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Did you recently clear the trouble codes or disconnect the battery? Once all codes are cleared, the computer will not display systems 'ready' until they go through an evaluation cycle. Some of the systems require a certain number of drive cycles before they will display 'ready'. A drive cycle is usually starting the engine from a cold start (based on coolant temperature) and driving until certain conditions are met. I don't know what the requirements are for your car, but my 2003 pickup truck requires more than 10 drive cycles before it will make the O2 sensors and evaporative emissions 'ready'. Most states only require that a certain number of systems are showing 'ready' to pass emissions certification.
****** your timing so it barely runs and have it tested again, i had to do this on a built motor i had in a pickup a while ago and it worked then. not sure if the testing standards have changed alot since but its an idea.
Has the battery been disconnected, or has it gone dead? Every time the battery is disconnected, all trouble codes are cleared, the check engine light is turned off, and all system monitors are reset. For the monitors to get back to a 'ready' status, the vehicle needs to go through one or more (sometimes quite a few) drive cycles.
When you go to the emission station, they check for codes, AND also check to see how many of your monitors are in a 'ready' status. (This keeps people from disconnecting the battery, and thus clearing any trouble codes, in order to pass emission tests).
If you have not disconnected your battery for a while, but the monitors are still not showing 'ready', you need to have a qualified shop check out your computer and other electronic systems.
Was the light on or did the tech say the system was not ready? They can be two different things.
A light would need to get scanned or a code reader attached to the car may do it. Most auto part stores will hook up a code reader for free and let you know what codes are present.
If the light was not on but it stated system not ready on the smog machine that can be due to the battery being disconnected. Its basically saying that the computer needs to go through drive cycles so it can test the its systems.
I have a 2003 new beetle TDI. I have got error codes on my ECM that have stopped my engine from starting. I got an OBD2 reader from the auto parts store. I plugged it into the OBD2 port below the steering wheel and got the error codes. After writing them down, I cleared the codes. the car started fine. It has pulled this a couple times over three years. I carry an OBD2 reader with me so I can clear the codes and get going again. Good Luck