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Troubleshooting codes P0036/P0135/P0136-Two 02 Sensors replaced by qualified mechanic in 24 July 14 & 22 Oct 14 (TWICE)-ALL probable causes (circuit fuses/connections/relay/etc.) checked out, TWICE-LIGHT STILL ON-MECHANIC baffled-HELP!!!!
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Which sensors exactly? may be a wire harness issue. will need to check for continuity from control unit to sensors. May also be the control unit itself. Diagnostic is necessary to confirm failure. Please contact us at 301-654-3333 to schedule in for diagnostic. Thanks, Jose
Check engine light diagnostic from Auto Zone, Advanced Auto, & Pep Boys, suggested BOTH 02 sensors (upper & lower) were defected. BOTH sensors replaced on two different occasions, in Jul & Oct by Al's Auto Clinic. WARNING LIGHT REMAINED ON. Probable causes, listed on the diagnostic printout, were subsequently done. WARNING LIGHT REMAINS ON. So.....