Sticks Posted Tuesday at 10:21 PM Posted Tuesday at 10:21 PM Hi to everyone. The pre cat O2 sensor in my Outback is reading a voltage of 2.7v. The O2 sensor has been replaced and still reads 2.7v. This is way above what it should be...0.4 to 0.7 v. Has anyone got any advice to cure this fault. Car is not showing any fault codes, but is failing the emissions in the MOT.
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