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The P1135 is set when the Engine Control Module detects a heated oxygen sensor heater circuit malfunction. This could be caused by a faulty air-fuel ratio sensor or a faulty engine control module.
Wiki User
∙ 9y ago
Wiki User
∙ 17y agoP1135 - Air-Fuel Sensor Heater Circuit Response.
Wiki User
∙ 16y agoCode P1135 means air/fuel sensor heater circuit response (bank 1 sensor 1)
Wiki User
∙ 14y agothey have to do with the air/fuel sensors that read the ratio of oxygen going into your fuel
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