deja

ran to autozone to pull/reset codes, which are below - car has 74k, o2 setup seems straight forward (anyone chime in on part #?) - what steps do you guys recommend taking to fix codes 40-46?

thanks.

P0135 - o2 sensor/heater/malfunct bank 1-sensor1
P0440 - evap emission system/malfunction
P0441 - evap system purge flow fault
P0446 - emission control system vent circuit malfunc

GSteg

iTrader: (15)

Take off the engine's valve cover and look at the resonator box on the passenger side of the engine. The box should have hoses connecting to the air intake pipe.

Looking at the box, check that all the hose attached to it are intact and are not leaking. Usually when you get those 3 codes, one of the hose is disconnected.

deja

thanks, i'll look into it and report back. fuel gauge is also off (does not read accurately below 1/2 tank, often drops below E), any ideas?

thanks

GSteg

iTrader: (15)

Disconnect the battery for awhile. I like to disconnect it for about an hour. You probably need an ECU reset. Mine was reading inaccurately for awhile until I resetted the ECU.

sam430

iTrader: (10)

bringing this one back up.

I got the p0135 code and this time it's the heater circuit issue. it's a brand new o2 sensor, I took the old one off thinking that the heater element went bad. The new one gave the same code.

Is there a fuse for these heater element?


I replaced the o2 sensor on the exhaust manifold..right before the cat, on the 2001 gs430. bank1 sensor 1. Passenger exhaust manifold, right???

I'm getting conflicting information on this, someone said the v8, it would be on driver side exhaust manifold and passenger side for the inline 6.