SPONSORED LINKS

Trouble Code Definition

Tiny
MBFETSKO
  • MEMBER
  • 2002 TOYOTA HIGHLANDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 126,500 MILES
I have a 2002 Toyota Highlander (V6, 2WD) with a Check Engine Light activation. The OBD-II scanner shows only one code - P1155; the description I have been able to find reads "A/F Sensor Heater malfunction Bank 2 Sensor 1". My Haines Manual has proven worthless to me.
I would like to know exactly what this means, where the sensor is located and if this is something that I can address myself?
SPONSORED LINKS
Saturday, January 8th, 2011 AT 9:38 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
It means the heater is not working on the 0/2 sensor for Bank 1 upstream. That is usually a bad sensor when only one of them codes.
That would be the upper sensor on the driver's side.
Was this
answer
helpful?
Yes
No
-2
Saturday, January 8th, 2011 AT 10:20 PM
Tiny
MBFETSKO
  • MEMBER
  • 6 POSTS
Just to make certain we're both looking in the same location. This sensor is the one on the manifold closest to the radiator and obviously visible?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, January 8th, 2011 AT 11:53 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
As I said, it's the sensor before the converter on the left side of the engine.
Was this
answer
helpful?
Yes
No
-1
Saturday, January 8th, 2011 AT 11:59 PM
Tiny
MBFETSKO
  • MEMBER
  • 6 POSTS
Thanks for the confirmation!
Was this
answer
helpful?
Yes
No
Sunday, January 9th, 2011 AT 12:10 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Closing out question
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-1
Friday, March 11th, 2011 AT 4:33 PM

Please login or register to post a reply.

Related Check Engine Light Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...
VIEW MORE

Sponsored links