Cadillac CTS The mid-sized sedan that has grown the popularity of the Cadillac brand with it's low price and sleek styling

Heated Oxygen Sensor

  #1  
Old 11-19-2017, 05:57 PM
Junior Member
Thread Starter
Join Date: Nov 2017
Posts: 1
Angry Heated Oxygen Sensor

I am getting the following codes on my 2003 CTS
PO 141 Heated Oxygen Sensor Heater Performance Bank 1 Sensor 2
PO 161 Heated Oxygen Sensor Heater Performance Bank 2 Sensor 2
PO 0037 Heated Oxygen Sensor Heater Circuit Low Voltage Bank 1 Sensor 2
PO 0057 Heated Oxygen Sensor Heater Circuit Low Voltage Bank 1 Sensor 2

I have replaced all 4 oxygen sensors, the Oxygen Sensor Harness' and a new ECU.
Using a mutimeter I measured 12 Volts at the Sensor and when I checked the ground there was no ground. So I ran a wire from the sensor harness to ground, still same codes.
Has anyone run across this? I cannot pass emissions with these codes.
Car runs very well with no other problems.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
clarkd52
US Emissions
0
11-02-2015 06:23 AM
rockfangd
General Tech
1
02-26-2015 11:03 AM
marc1965
Cadillac STS
1
03-19-2010 09:50 PM
97Caddy
Cadillac Eldorado
2
04-27-2008 12:33 AM
rufrydermg
General Tech
1
12-28-2007 07:07 PM


Thread Tools
Search this Thread
Quick Reply: Heated Oxygen Sensor


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.