P0134 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

OBD-II Trouble Shooting Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

Thread Tools Search this Thread
Old 09-24-2009, 12:43 PM   #1
Retired Senior Admin

Expert Gearhead
Thread Starter
Danthurs's Avatar
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default P0134




PCM provides about 0.45 volt reference to HO2S 1. HO2S 1
sensor signal voltage varies from about one volt when exhaust is rich
to about 0.1 volt when exhaust is lean. PCM reads and stores sensor
voltage information and evaluates the voltage samples to determine
amount of time sensor voltage is out of range. If HO2S 1 voltage is
out of predetermined range, DTC will set.

  • Check engine light illumination
  • Poorly running/engine missing
  • Blowing black smoke
  • Poor fuel economy
  • stalling, stuttering
  • Bad O2 (oxygen) sensor
  • Bad heater circuit in the O2 sensor
  • Wiring or connector to the sensor damaged.
  • Blown heater circuit fuse
  • Holes in the exhaust system
  • PCM failure
Possible Solutions
  • Replace the oxygen sensor
  • Rusted exhaust pipe, repair.
  • Inspect wiring & connector(*) for problems, repair.
  • Excessive amperage blowing heater fuse (replace sensor and blown fuse)
  • Replace PCM (last resort)
Danthurs is offline  

Related Topics
Thread Thread Starter Forum Replies Last Post
P0171, p0134, p0135 Loudimpala General GM Chat 14 06-03-2012 09:20 PM
p0134 insufficent activity bank 1 sensor 1 oxygen sensor Boostinta 1992-1999 8 06-04-2009 01:41 PM
P0134? Dr_Gonzo 2000-2005 1 03-19-2009 07:47 PM
96 se code p0134 tommol 1992-1999 3 07-16-2007 02:17 PM
code P0134-How? A.ross 1992-1999 4 03-13-2004 05:14 PM

obd2, obdii, p0134, p134

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 02:12 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.