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Home › Infiniti › 2004 › I35 › Repair and Diagnosis › Engine Performance › System › Engine Control System › DTC P1144 & DTC P1164: Ho2S1 › DTC Confirmation Procedure › Testing Condition:

Testing Condition:

Always perform at a temperature above -10° C (14° F).
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.