I need help diagnosing what the actual culprit of the p0420 that threw up few days ago. I ran my torgue scan tool and I am adding screenshots for better understand.
I am not able to understand the various test. I need some help here.
Pic1 is the mod 6 test, pic2 is the freeze frame of the cel, pic 3 is the wave form of 02 sensor bank1 sensor 2 and the last 2 pictures are the waveform of the a/f sensors.
This morning both by check engine and VSC lights came on. I took the car to Autozone and the tester said that P0420 code appeared twice.
He sold me a bottle of Cataclean and told me to try that first.
Any chance that will work? Should I reset the lights after using Cataclean or should it go off on its own? How do I reset the lights (remove power to the battery for a few hours or is there an easier way)?
Am I safe driving the car around in the meantime?
Any other suggestions? Anything else it could be or is that code pretty definitive as to what the issue is?
Thanks in advance!
I have a 2000 es300 and it started bucking badly and check engine light with codes p0753, p0758, and p1760. I don't see how all 3 solenoids could have gone bad at the same time, ive checked the wiring going to the trans and no problem found, is this a sign the trans is going bad, or maybe just an electrical issue
good evening lexus owners,
Lexus Gs430. [90500mi] - clean title - clean carfax.
my check engine light is on and the Yellow indicator with exclamation mark also on (Brake System Warning Light (yellow) and the TRAC light is also on (suggesting that traction is OFF) --> all 3 of these are related to the code: P0430
aside from that the Tire Pressure light is also blinking at me constantly.
aside from that the Check VSC is also displaying.
aside from that the RED traingle exclamation light also blinks (slowly - sometimes stays on - sometimes doesn't)
aside from that the AFS OFF light is also constantly blinking
I drove a car home after the previous owners mechanic cleared the CEL
The check engine light and the TRAC light and the light beside Check engine were all gone until about 90-100miles of driving. Then all 3 returned together.
IF my issue was a bad Catalytic converter(s) / leak(s) in exhaust / bad O2 sensor(s) - which one of these is most likely to be ruled out since the CEL didn't come back (after clearing) until over an hour of driving / city and highway...
which issue do I ignore and which do I address?
The only code the car has given out is:
P0430 Lexus - Catalyst System Efficiency Below Threshold Bank 2
I noticed the car is fine while driving.
I noticed the cruising range it gave me is actually exceeding the cruising range by a few miles.
But now that the check engine light is on again, maybe my gas mileage will take a hit. yes IT DID
So I checked the GAS CAP as most people keep saying all over the forums for the check VSC.
My Gas cap and the ring around it both seem to be okay.
But you never know, maybe this could be an issue.
Which of the lights can I fix via DIY or Indy shop?
Which light has to be taken the LEXUS . toyota to fix / reprogram. don't normal shops have these computers to reprogram stuff?
thanks in advance for any replies and guidance.
The lexus dealership that maintained the car (while under warranty) said if you aren't the same owner who owned it when the work was done, then you can't find out jack from them.
No open recalls (confirmed)
i feel helpless with the light show going on on my dashboard.. all different colors of lights flashing.. red.. yellow.. amber.. orange.. -__-
should I try removing power to the battery to reset ECU?
or try removing a fuse or two?
I haven't done anything as of yet.
started googling and joined up here.