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O2 sensor not connected

Motor Vehicle Maintenance & Repair Asked by Sharee on April 16, 2021

Just change manifold on an 2002 Hyundai santa fe. One of the o2 sensor is not hook up. The car start ed drive around corner car act like it was choking and stop. Now car wont start up

One Answer

A disconnected O2 sensor would never prevent a car from starting. The computer would see the lack of o2 response and stay in OPEN LOOP mode.

Answered by user9181 on April 16, 2021

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