05-03-2024, 09:06 AM | #1 |
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Engine tuning detected - O2 sensor error
Just got a used 2017 f25 20d.
I have used feature installer to install fsc code for CarPlay. I have also used esys to upgrade iStep, which only entailed update of the HU. I have also used BimmerUtility to do some minor coding, and installed the aftermarket amp/dsp Match Up 8DSP via quad lock harness behind HU. Recently got ISTA and it immediately alerts about engine tuning detected. Could this be a false positive due to the modifications mentioned above or is the car definitely tuned? If so, how can I remove it? Perhaps it could be related to the following error codes? 284E00 Oxygen sensor after catalytic converter, Nernst voltage, signal: Open circuit 283400 Oxygen sensor after catalytic converter, heating, activation: Open circuit 282E00 Oxygen sensor after catalytic converter, heating, activation: Short circuit to B+ I’ve cleared them multiple times but they always return. I suppose the sensor needs replacing? Or is further troubleshooting advisable? Very thankful for any input. |
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