Q: o2b1s1= 1.95 V , o2b1s2=0.70 V , P0420
Hi Everyone .
Elantra 2010 , Live Data : FUELSYS1=CL FUELSYS2=-- LOADPCT(%)=17.3 ECT( F ) = 194 SHRTFT1(%)= -1.6 LONGFT1(%)=14.1 RPM(rpm)=666 SPARKADV(o)=5.5 IAT(F)=129 MAF(g/s)=2.45 TP(%)=4.7 O2SLOC B1S12--B2S---- O2B1S2(V)=0.760 SHRTFTB1S2(%)=N/A EQRATB1S1=0.978 O2B1S1(V)=1.95 EVAPPCT(%)=0.0 FLI(%)=9.0 EVAPVP(inH2o)=1.499 BARO(psi)=14.9 CATEMP11=CATEMP12(F)=749 VPWR(V)=13.968 LOADABS(%)=27.5 EQRAT=0.998 TP_R(%)=0.4
AAT(F)=87
Freeze Frame Data: DTCFRZF=P0420 FUELSYS1=CL FUELSYS2=-- LOADPCT(%)=50.2 ECT(C)=86 C SHRTFT1(%)=11.7 LONGFT1(%)=13.3 RPM(rpm)=2374 VSS(km/h)=100 SPARKADV(o)=22.0 IAT(C)=31 C MAF(g/s)=25.49 TP(%)=20.0 EVAPPCT(%)=94.9 FLI(%)=9.0 BARO(kPa)=103 kPa VPWR(V)=14.070 LOADABS(%)=82.0 EQRAT=0.995 TP_R(%)=19.2 AAT(C)=25 C
I Would be appreciated it if you could tell me that with data above specially when O2B1S1=1.9 V and O2B1S2=0.7 V and CATEMP11=CATEMP12=exactly shown same amount , Is it Catalytic converter problem or FUEL SYSTEM may LAEK?
My car has 100000 miles.
My car has an automatic transmission.
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The upstream oxygen sensor appears to be out of range. The expected value should be between 0.2 and 0.9 volts with a frequency of 1 to 5 Hertz. Your report shows 1.9 volts. I would first look at a real time graph of the upstream oxygen sensor waveform. The downstream sensor voltage is on the high side. The LTFT is high and that could be indicative of a MAF calibration issue and/or a vacuum leak. The report shows a number of issues and I would suggest you request a check engine light diagnostic because a real time scanner will be needed to follow-up on what you have initially. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
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