GS300 changed spark plugs to TM plugs & now code P0154, vsc, vsc off light, abs light
 

ok, so last weekend i changed out my spark plugs to the torquemaster plugs. after i put everything back together i get a cel code of P0154 and ABS, VSC, VSC off light came on so i thought maybe my bank 2 sensor 1 o2 was bad. i bought a new one for bank 2 sensor 1 & bank 1 sensor 1 i replaced them both and the code still comes back on along with my ABS, VSC, VSC off light. has anyone had this happen to them...? if so what did you do to fix this problem.
thanks in advance

- john

i dont know why it would turn off you abs and vsc if it was an emmisions issue (plugs)

You left something unplugged or you pinched the harness, just retrace your steps, also check the grounds.

u may need a (TPS) sensor! i had the same problem with those VSC lights changed the sensor car runs perfect! $100 dollar part.

^What codes were you throwing? If you are referring to your issues with rough idle in the thread you started, I'm not sure if the OP is having the same problem. Maybe he can elaborate.

OP, I don't know what the issue is, but did she throw any other codes? Usually P0430 or maybe P0153? Maybe its the cat?

i've retrace my steps a few times already and can't seem to find anything wrong. the ground is good as well.

i've tested the TPS and i'm getting voltage, so it's good there.

no, it didn't throw any other codes. just the P0154...




thanks for all your time and input guys :thumbup:

- john

Please keep us posted! I was looking into this a little more and maybe its the PCV?

Why do I always see posts with TM plugs installed with problems I wonder why....

P0154 Possible causes:

Defective O2 Sensor
Heater relay or Circuit (O2 heater not interior :) )
Air Induction System
Fuel Pressure Problem

Did you clean the terminals before reconnecting? I was reading that excess dirt might cause a poor connection.

yall are thinking way to deep into this. Stick with what your code is bank 2 sensor1. Im hoping you when with parts from lexus. Pm me is you can't figure it out. I will look at the EWD tomorrow if you need me too. Lexus's are too easy to work on to be thinking about random stuff to replace. Let me know man.

this happen to me like 4 times. Does your brake light work?

stick with OEM Denso Iridium Long Life plugs....great price at Sewell.

try this, its not the same code but i did notice when i was replacing my spark plugs as well the connector for the o2 sensor near the firewall the wires were brittle and cracked. you can try a voltage test on the 4 wires to see if thats your problem. I had to rewire/solder a new connection and all was well after.

I'm having the exact same issue....did anyone ever post a resolution? It seems this thread just died off...!