PR4 ECU Comaptibility

ASSISTANCE Electrical & Entertainment Systems
1

I have a 91 integra LS, PR4-A10 ECU (49 state, Manual Transmission). It’s throwing a code 13, Barometric Pressure Sensor.

Everything I’ve read says that the sensor is mounted on the board of the ECU, and the best course of action is to replace the ECU.

Someone local has a PR4-L02 (California, Manual Trans). Are they plug compatible?

Thank You.

2

yes a L02 will work fine, its just trimmed differently for emissions. Or… you can just de- solder the bad 12 pin baro sensor and solder in a new one from any 91 or newer honda computer. Their’s a picture of one that i did a few months ago, if you search.