Hey!

After swapping the d14a4 for a d16z6 with p28 ecu(stock) I have been getting CEL code 1 on deceleration and low idle when rolling with the clutch pressed.
When stationary the car idles perfectly fine.

I have soldered the 4 wire o2 sensor into the ecu and bypassed the VTEC pressure switch.

I already tried replacing the o2 sensor with a brand new one but it still gives a code 1 on deceleration.

I would greatly appreciate it if anyone could help me figuring out what the problem is. 🙏

EDIT:
Put in a chipped p06 ecu and replaced the stock o2 sensor with a AEM x series wideband, still didn’t fix it.