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codi2000 12/8/2012
2007 Toyota Corolla CE 4 Cyl 1.8L - Engine
I change front oxygen sensor and install universal USOS 4000 sensor. Check engine light is on again.!!!
1 Answer
  • Jimm
    Jimm 12/9/2012
    First step - have the check engine light or stored fault codes scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific fault code - for more assistance.

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