code 26
Drifting
Joined: Dec 2005
Posts: 1,313
Likes: 2
From: High Ridge Missouri
The quad driver contols 4 circuits as quad implies. What you need to do is check those items. They are the EGR solenoid, EVAP canister purge soleniod, air pump control relay and the ESV valve (electronic switching valve-it controls the air flow from the AIR pump. I'll bet one of these 4 items failed, the only other thing is the ECM, but every time I've seen a quad driver code it's been one of the components, not the ECM.
