Notes On Intermittents
If Code EO13 is stored as a history code, start engine and enter diagnostics. Operate engine at fast idle until "AUTO" closed loop status light is turned on. Observe parameter of ED07 while manipulating wiring on circuit Nos. 412 and 413. If parameter ED07 changes from a fluctuating voltage to fixed .45 volt, repair intermittent open circuit.
Check circuit No. 413 for a good ground to engine (clean, tight star washer installed). Ground for circuit No. 413 is located on the engine, at right or rearmost cylinder head.
Review snapshot data parameters stored with this code to verify failure. If failure is verified, check and repair intermittent wiring connection or sensor.