Hi all ~
I purchased my new to me vehicle a 2007 Lexus gx470 1 month ago. Today the check engine light, stability and VFC dash lights came on. Filled the tank and check the gas cap. Runs OK.
I then checked the codes and they are P1445, C1340 and C1201. I will bring it back to where I bought it yet I appreciate any insight about possible root cause.
Local shop diagnosed shorted battery and replaced. Now have check engine light, TRAC OFF light, and P0300,301, 304, 305, 306, P01300, P01310 and C1201. Car now run very rough with no power. sounds awful. Radio has no power. Car was running fine prior. What did they do? I suspect something got disconnected, either an electrical connector and/or a vacuum hose. Does anyone have any ideas? Any help would be appreciated!
Hi all, I need some help diagnosing check engine light.
So a couple weeks ago the check engine light came on, and I took it to autozone and the pulled codes P1133, and P1135.
P1135 is for the A/F sensor heater. P1133 is for the sensor itself and says it could be a Fuel Pump, injector, pressure regulator, a vac leak, or a fault sensor.
From everything I've read, it doesn't really seem like the A/F sensor is bad. The car doesn't run poorly at all except for an occasional pulsating idol. It also does a weird thing (maybe unrelated?) but when I'm accelerating up a hill, there's a weird squeaky whining noise that hits about about 2500 RPM and drops off shortly after or as soon as you let off the throttle.
My thinking is it's a vacuum leak, which is causing this weird noise. I've read a bit about how to check vac leaks, but I'm not sure where to look for the bank 1, sensor 1 A/F because it's tucked on the back of the engine.
Thanks in advance for any help. I'm trying to avoid having to go in to a mechanic if I can, and I don't want to just throw money at the problem if I can go about it intelligently. A/F sensors are expensive.
Thanks in advance for any help!