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Nice to know. After buying the display I found out that they also make a compact version, the A203 although a beeper is all you need...

Your eyes should be on the road... You can see that they are using so many audible alerts for less important things. Sounds for turning signals, continuous beeping for minutes (!) if you do not wear your seat belt when a flashing indicator would be more than enough, but when it comes to...

The window in which you can save your car from overheating damage is measured in seconds... You can very easily miss the red light warning especially if you are driving in the sun with the top open. With an audible alarm you can immediately stop your car and avoid any damage.

Good news, at least for me.. For anyone interested, the second OBD2 display shown at the top of the thread works perfectly fine with a 1.9 2001 Z3 despite the seller saying that it will not work! It identifies the ISO 9141-2 protocol and displays the engine temperature correctly. The...

Very nice leather seats and you keep them in top condition, Nice! :thumbsup:

If you are 100% sure that the battery is fine and that there is a battery drain its pretty easy to find it using a multimeter and probing the fuse box. Open the fuse box, close all other doors, lights, etc and lock the car. Set your multimeter to the millivolts range. Probe each fuse on its...

You can check if something is draining you battery very easily with a DC clamp meter on the battery terminal. If you do not have one, I suggest the UNI-T UT201E which is pretty good: https://www.amazon.co.uk/UNI-T-Resistance-Capacitance-Multimeter-Temperature/dp/B00O1Q2HOQ?th=1

Good question... You can check the battery with this, especially CCA: https://www.amazon.co.uk/KONNWEI-100-2000-Automotive-Alternator-Motorcycle/dp/B08MPXGSGN

I have cleared all three codes and only the P0130 has returned.

So, I am not sure if I still need to replace the O2 sensor despite the fault code... :confused:

This is from September 2023: CO(%) HC(ppm) λ Idle 0.00 23 High RPM 0.01 14 0.999 Does it compute.. ???

The car is working fine and I am not sure if the oxygen sensor is 100% faulty. (?) Have a look at the live data with the engine at operating temperature. After erasing the fault codes I only got the P0130 again.

Thanks, I will save both the before and after data to see what will change. The car is already more responsive after replacing that plastic connector!

Ok, I will replace it. I will try to replace it myself, although I've heard that they might be a PITA to remove the old one... I am curious to see if the small hesitation from idle will be corrected. Thank you! p.s. Are there any quantitative measurements I can take that will actually show a...

Great, I have just fitted a 4mm generic one I had. The original was a black one. I am not sure what temperatures it will experience, the one I just fitted is rated for 80 degC. Do you think that leaving the faulty O2 sensor is a bad idea; They are quite expensive... Thank you for your help!

Thank you for the detailed explanation. Does this count as a vacuum leak to trigger the P0170 Fuel Trim error? I cannot find any other cracks, splits or holes on the hoses.

Hi, I am getting the following OBD2 codes for quite some time now: P0170 Fuel Trim Bank 1 P0130 O2 Sensor Circuit B1S1 P0135 O2 Sensor Heater B1S1 The pre catalytic converter oxygen sensor has failed I guess. The fuel consumption has not changed at all, all these months. It also passed MOT...

I just did the mod but the OBD2 display still cannot recognize the protocol. So the question remains. If somebody knows an OBD2 display that works with the 2001 Z3 please share. Thanks.

I will give it a try. Maybe that is why these Chinese readers cannot fully open the ISO9141-2 protocol.

I have heard of this mod but I haven't tried it. Have you tried it with an OBD2 display?