I changed the battery 2 months ago.
Since then, I have not been able to pass the smog check.
I can't sell my car. I drove more than 1,000 miles, and I followed the rules of driving. I live in California.
Please give me some advice. I can do anything if I can pass.

Please understand that I am not good at English...

 

Go on facebook and join the JDM parts page group, post up a thread asking who has a smog hook up, there's always people who work at smog shops that can pass the car for extra money, usually $350.

 

there is a drive cycle that needs to be completed prior to smog.
since your battery was replaced, the monitors are not ready.
most smog shops will just tell you to drive the car for a while but just driving the car does not automatically make it ready.

this is a general obd2 drive cycle.
make and model may vary

The ignition key must not be on prior to the cold start otherwise the
heated oxygen sensor diagnostic may not run.
1. As soon as the engine starts, idle the engine in drive for two and a half
minutes with the A/C and rear defrost on. OBD-II checks oxygen sensor heater
circuits, air pump and EVAP purge.

2. Turn the A/C and rear defrost off, and accelerate to 55 mph at half
throttle. OBD-II checks for ignition misfire, fuel trim and canister purge.
Hold at a steady state speed of 55 mph for three minutes. OBD-II monitors
EGR, air pump, O2 sensors and canister purge.

3. Decelerate (coast down) to 20 mph without braking or depressing the
clutch. OBD-II checks EGR and purge functions.

4. Accelerate back to 55 to 60 mph at half throttle. OBD-II checks misfire,
fuel trim and purge again.

5. Hold at a steady speed of 55 to 60 mph for five minutes. OBD-II monitors
catalytic converter efficiency, misfire, EGR, fuel trim, oxygen sensors and
purge functions.

6. Decelerate (coast down) to a stop without braking. OBD-II makes a final
check of EGR and canister purge.