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Bank 1 sensor 2 O2 sensor

Tiny
JASON1998
  • MEMBER
  • 1997 FORD ESCORT
  • 2.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have a p0141 code for my 1997 Ford Escort. I know it is a O2 heater circuit malfunction. I need to know where and how to fix this problem.
Saturday, February 27th, 2016 AT 12:50 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check items in pics first.
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Saturday, February 27th, 2016 AT 1:00 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You have a heater code specifically so most of those things wouldn't apply here. It's not the signal that you have a problem with, just the heater, If it were a power supply fuse it would have knocked pout both sensors so you should be able to eliminate that. That leaves either a bad sensor or related wiring. It's usually the sensor itself with the heater burnt out. This would be the downstream sensor, the one after the converter.
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Saturday, February 27th, 2016 AT 1:44 PM

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