97 Thunderbird LX V8 P0155 and P0161 | Ford Thunderbird forum club group 1955-2005 models

  • We're glad you found us via a search engine! Right now, you can join our club absolutely free and unlock member only features like the site search! This notice only appears once! It only takes 30 seconds to register, and we would love to have you as part of the World's largest Thunderbird Forum/Club! Click here to continue

97 Thunderbird LX V8 P0155 and P0161

  • Thread starter Thread starter lonewolf94
  • Start date Start date
L

lonewolf94

Click here to upgrade
Reaction score
0
Thunderbird Year
1997
Hi everyone, the check engine light recently came on my car and found codes P0155 and P0161, O2 heater circuit codes for both sensors on bank 2. I disconnected each sensor to test and measured around 25 ohms resistance on each sensor. I decided to replace the sensors anyway even though I thought it was somewhat odd for both sensors to go bad at the same time. After I replaced the sensors, the same two codes came back. So I went back at the connector, and I have 12 volts on the power wire but I do not have ground on the heater ground wire.

Does anyone have a wiring diagram for the O2 sensors for the 4.6 Thunderbird? Do these sensors receive ground from the ECM?

This page contains affiliate links for which I may be compensated. As an eBay Partner, and Amazon Associate I may be compensated if you make a purchase at no cost to you.

 
lonewolf94 said:
Hi everyone, the check engine light recently came on my car and found codes P0155 and P0161, O2 heater circuit codes for both sensors on bank 2. I disconnected each sensor to test and measured around 25 ohms resistance on each sensor. I decided to replace the sensors anyway even though I thought it was somewhat odd for both sensors to go bad at the same time. After I replaced the sensors, the same two codes came back. So I went back at the connector, and I have 12 volts on the power wire but I do not have ground on the heater ground wire.

Does anyone have a wiring diagram for the O2 sensors for the 4.6 Thunderbird? Do these sensors receive ground from the ECM?
Click to expand...
 
Yes, PCM pin 93 controls ground for HO2S1, pin 94 HO2S2, pin 95 HO2S3, pin 96 HO2S4, pin 97 HO2S4. There is another connector C168 where all four wires pass through; under hood passenger side near firewall, 12 pins gray color..
 
Any update on issue? Did you get the codes to clear? O2 sensors fine?
 
You must log in or register to reply here.
Back
Top