EB trimming, oxygen sensor before catalytic converter bank 1. changed oxygen sensor
and checked for any air leaks, don't have any. still get the service engine light on .what can be causing this ?
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Hold on before replacing the third sensor—check if the wiring harness connector on the new oxygen sensor has backed-out pins, a common issue with Land Rovers. Let me know if the specific trouble codes are P0135 or P0171. If the code is P0141 (rear O2 sensor heater circuit issue), you can refer to my detailed guide: OBD - II Trouble Code P0141: O2 Sensor Heater Circuit Bank 1 Sensor 2 - Causes, Symptoms & Diagnosis
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@rick24995 what service code do you get hen you scan your BMW? What year and what engine is this?
von oldturkey03
Maybe you have a wiring issue
von Vertinhol