O2 Sensor replaced, coded PO135 keeps turning on

Tiny
PATRICKJJ
  • MEMBER
  • 2007 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
O2 Sensor replaced with new, and light comes back on, reset error coded PO135 keeps coming back?
Thursday, December 30th, 2021 AT 10:55 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

If the sensor is new, chances are it is a wiring issue. By chance, do you have a live data scan tool? If you do, check the voltage signals from the involved O2 sensor and let me know what you are seeing. The code indicates the heated component in the sensor doesn't reach 959F within 45 seconds, so chances are it isn't powering.

Also, if you look below, I attached the diagnostics for this code. Take a look through them and let me know if you are comfortable performing them.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care and Happy New Year.

Joe

See pics below.
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Friday, December 31st, 2021 AT 12:21 AM

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