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Lexus RX 300 Check Engine, VSC and TRAC OFF Lights

71 messages,  Last post on Jan 09, 2013 at 7:32 PM

You are in the Lexus RX 300/330/350 Forum.

What is this discussion about? Lexus RX 300, SUV

    

Messages Page 8 of 8

#62 of 71 Re: Simultaneous CEL codes 1130 & 1150. [wwest] by la4mead

Apr 18, 2011 (9:25 pm)

Replying to: wwest (Apr 18, 2011 4:41 pm)
I've got p1150 and p1155 on mine; the a/f sensor for each bank. P1155 shows up as "pending" and I don't know what that really means. I assumed I should change both, anyway. I haven't had the time to replace them myself, and serious cash flow issues so I'm not taking it to a dealer. I hate the retina-burning brightness of the CEL and the "Trac Off" lights on dark roads.
 
I'm guessing the system is detecting an error comparing the two a/f ratio sensor readings, could that be what's going on? There is lots of info from other owners on Club Lexus forums (some seem to be pretty savvy). There are really helpful photos posted by members.
 
I guess I'll have to order both a/f sensors; that's probably the best route. After 13 years I guess the car's earned a new set. The sensor in back (bank 1 is it?) looks like it will be a knucle-buster to unplug, and then a trip to the chiropractor afterward.
 
The OEM replacement sensor sold under the Denso part number appears to be the least expensive route to get OEM. $110 each through Amazon (unless the price changes while I'm online again).
 
Let us know what you figure out. I'm sure others have had this come up, too.

#63 of 71 CEL & VSC warning light by ktc

Apr 19, 2011 (12:57 pm)

I also got both CEL and VSC lights on for my 2001 RX300 after 98000 miles, take the mass air flow sensor out (2 screws, sensor located on the air duct after air filter), spray it with alcohol, let it dry out, then reinstall it, and fix the problem, no cost and no need to replace the sensor

#64 of 71 Re: CEL & VSC warning light [ktc] by la4mead

Apr 19, 2011 (1:14 pm)

Replying to: ktc (Apr 19, 2011 12:57 pm)
That is a good fix for the dirty MAFS (but won't help if the a/f ratio sensor (what used to be known as an oxygen sensor) is providing a faulty reading.

#65 of 71 Re: Simultaneous CEL codes 1130 & 1150. [wwest] by la4mead

Apr 21, 2011 (6:02 pm)

Replying to: wwest (Apr 18, 2011 4:41 pm)
I scanned my codes again... Mine is showing both p1150 (perf malf bank 2 sensor 1) and p1155 (sensor heater circuit malf bank 1 sensor 1). Sensor 1 is the a/f sensor for each bank, bank 1 is the side facing the firewall, bank 2 is the side facing the radiator...
 
The question is: could it be the bank 1 (firewall) sensor's heater circuit is bad, and that's the only problem. Or, do I need to order two new sensors (the part# is the same for each). Perhaps it shows the other sensor error based on comparing the two readings? Any ideas?

#66 of 71 engine or exhaust hum by neecy57

Sep 22, 2011 (6:34 am)

Hello,
 I have a RX300 2002 that I purchased in July of last year so far only minor problems the car had 80,000 mi at purchase but what's brothering me is I hear a slight hum when I am idleing at stop light I've had this checked by a certified mechanic who only works on Lexus he hears it too he put it on a machine, checked everything to no avail I had a small hole in my flex pipe he changed that other than that the car runs like a dream for a 9yr old car. It was a one owner car no accidents garage kept paint looks like new. Does anyone else have this problem? It's not loud just annoying . In winter it's a little louder in summer not so.

#67 of 71 Re: Simultaneous CEL codes 1130 & 1150. [wwest] by becung

Oct 15, 2011 (3:01 pm)

Replying to: wwest (Apr 18, 2011 4:41 pm)
other day we had the same problem 0n 2001 rx300 with codes 1130 & 1150 and also lean bank1 & bank 2. misfire cylinder #1,3&5. we changed the camshaft actuator solenoid on bank1. test drove the car- got no more misfire cylinder #1,3 &5. but still had codes 1130 , 1150 and bank 1 & bank 2 lean. we cleaned out the fuel injection system and done deal. problem fixed. clean fuel system on this car take a long time to disable the fuel pump.
to save time we ran a hose from fuel outlet to direct to fuel tank cap.

#69 of 71 VSC, ABS, headlight auto-level failure indcators. by jaswood

Nov 13, 2011 (7:07 pm)

'01 "AWD" RX300, ~90,000 miles.
 
Diagnostics indicated both l/r rear speed sensors out plus rear vehicle heigth sensor out.
 
Suspected, inspected, for rear cable broken, kicked up road debris...?
 
Nothing there.
 
Opened passenger side kick panel and discovered.....WATER.
 
Connector set, IM1,IM2, SOAKED.
 
Water source, dripping, seems to be quite high up, seemingly just to the right of the CD player "box". Disassembled inlet cowling but could not replicate problem even with water pouring down the windshield and into the air inlet ducts for A/C intake airflow.
 
Disconnected, cleaned and dried ,(hair dryer,) both IM1,2 connectors and fault indicators extinguished.
 
Anyone experience this...? Ideas for fix?

#70 of 71 Re: 2007 lexus rx 350 check engine,vsc and trac off light on [garytruong] by xath101

Mar 29, 2012 (8:58 pm)

Replying to: garytruong (Jul 13, 2011 11:13 am)
Prices are a little steeper, $185 Coil - back odd cylinder labor around $230. $415 total plus tax on coil at Lexus of Las Vegas.
 
I currently just had lights turn on again without vehicle shaking.

#71 of 71 Re: LS 400 VSC Indicator [galmarode] by jake132

Jan 09, 2013 (7:32 pm)

Replying to: galmarode (Sep 11, 2010 10:04 am)
Im having the same problem I as I keep reading about, trac off, vsc and check engine light... I checked and it was still there... lol. I replaced bank 2 sensor 1 cleared code and lights came back ten minutes later I checked the hoses on the air box not disconnected.. what do you mean by cross pins 14 and 24?? maybe this could help me with my problem?

Messages Page 8 of 8

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