Hyundai Tucson 2019 hybrid diesel 1.6 htrac manual transmission 39000km
- Air_stat - - -
- o2s12(v) 0.195
- shrtft12(%) -89.8
- o2s21(v) 0.270
- shrtft21(%) -1.6
- o2s22(v) 0.075
- rpm(/min) 933
- vss(mph) 8
- Sparkadv(•) -57.0
- iat(*f) -14
- Maf(lb/min) 7.0
- tp(%) 1.2
- Shrtft1(%) -93.8
- longft1(%) -99.2
- shrtft2(%) -99.2
- Longft2(%) -98.4
- frp(psi) 0.4
- map(inhg) 4.2
- Dtc_cnt 5
- dtcfrzf p05ac
- fuelsys1 cl_fault
- fuelsys2 - - -
- load_pct(%) 6.7
- ect(*f) -36
All this values where taken at live data on idle
My car is bucking when releasing or pressing the gas pedal at around 1800-2600rpm. My fuel pump is new because of whining noise😒
in my opinion I think that the upstream oxygen sensor must be replaced. What do you think?
Well. It's that easy of a fix cuz subtracting that much fuel that thinks it's running rich as hell could be fuel injectors pouring fuel in could be lots of things but sensors are relatively cheap
First of all, thank you for your answer. I know from your video that you don’t like Hyundai and I made a bad decision buying it but now it’s too late. My fuel injectors are fine. One of the sensors is defected but which one should I look for first? Also the message cl_fault that is blinking is because of the oxygen sensor? Is that true?
If I'm reading that data right the Engine Coolant Temp is showing -36° F. The Intake Air Temp is showing -14° F. Those values wouldn't be right even at the North Pole this time of year.
Anyway, the drill for running rich (in no particular order) is, Check Fuel Pressure. Check injectors. Check MAF and or MAP sensor(s). Check IAT sensor. Check ECT sensor. Check EGR valve. Check O2 sensor.
Yes you are reading right, I don’t know why it is showing negative values. Fuel pressure and injector are ok.. probably the other sensors you mentioned are faulty..
2019 ... 39000km
so covered by warranty right?
Yes it’s covered by warranty but when I go to the car dealership, the mechanics don’t insist on the problem in order to connect it to obd to see the live data like I did. They are trying to test drive the car in order to see if it actually bucking which doesn’t do always. On this Monday I have an appointment with them to check the car. If only they don’t do any of the tests we mentioned before I will call my lawyer. It’s been almost a year with this problem and nobody can do nothing or at least don’t try. Hyundai’s after sales service are the worst I have ever seen.
https://www.wheelsjoint.com/hyundai-tucson-bad-o2-sensor-symptoms-causes-and-diagnosis/
There is this article about Hyundai Tucson, I don’t if it helps somehow.