Notes On Intermittents

If Code EO13 is a history code; start engine and enter diagnostics. Operate engine at fast idle until "AUTO" closed loop status light is turned on. Observe parameter ED33 while manipulating CKT 412 and 413 wiring. If parameter ED33 stops fluctuating and stays fixed at 0.45 volts, repair intermittent open circuit. Check CKT 413 ground to engine for proper installation (clean, tight, star washer installed). Ground for CKT 413 is attached to the rear of the right cylinder head.