Oxygen sensors

2001 JEEP CHEROKEE
189,000 MILES
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IVANDIAZ11
  • MEMBER
  • 1 POST
Is it worth buying a car with all four oxygen sensors needed replacing? If so, how much would it cost?
Mar 31, 2022 at 6:29 PM
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STEVE W.
  • ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
The problem with that is it's not normal for all 4 O2 sensors to fail at once, and if all four are a problem, then it's very possible for the converters to be bad because they are not being tested. Do you know the actual codes the vehicle has or is this a seller telling you that it just needs the sensors replaced? Personally, I would pass on it unless you could have it proven that "it's just the sensors".
Mar 31, 2022 at 8:48 PM
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