I recently converted my 87 Vanagon camper to Subaru EJ 22 engine with ECU from USA Legacy. Is there an OBD I scanner or code reader available to read the proprietary Subaru codes from this ECU.

What year EJ22? If its from a '95-newer it will be OBD-II and here is a Scan tool for that http://www.harborfreight.com/can-obd-ii-code-reader-eobd-scanner-98614.html?utm_source=microsoft&utm_medium=cpc&utm_term=obdii%20reader&utm_campaign=Top%20Website%20Sellers

 

If its from a First gen Legacy 90-94 then it will be OBD-I. There is no scan tool for OBD-I Subarus. you will have to plug in the "Read" connectors and count the CEL flashes.

They are self-diagnostic for "codes" via the test connectors in the harness - but there is also a software program that can interface with the ECU via the Subaru Select Monitor port on the OBD-I cars - check over on www.legacycentral.org for a current address to the download page for it. You need to make a special serial port adaptor cable (using a Metra radio harness adaptor of all things ), and then run the software on a laptop, etc to read the real-time report data from the ECU.

 

GD

Engine is 94 EJ 22, OBD I , thankyou to those who replied. Will check Legacy central webpage.

You can read parameters via the Subaru select monitor port, besides just the basic diagnostic codes from the check engine light. A member from the Legacycentral BBS has made a program to hookup to the select monitor port.

 

Here's info on the scan tool/program

 

http://www.surrealmirage.com/vrg3/b10scan