was scanned @ auto zone and has a code p1693. they didn't know what it was for. about to have to do emisions will that affect it?
Feb 11, 2008 at 12:51 PM
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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RASMATAZ
AUTOMOTIVE REPAIR CONTRIBUTOR
75,992 POSTS
You'll fail if the light don't come On during the bulb test and also On during engine run.
OBD2 1993 indicates a problem with the oil control valve(OCV)for the variable valve timing(VVT)system, this valve controls oil pressure to the variable cam timing system and the best way to check it is to connect a scantool to perform a test of the valve using the active test method, the toyota dealer can do this