Check engine light on with code P2238

Tiny
KAMEYA MUTAIPI
  • MEMBER
  • 2003 TOYOTA RAV4
  • 1.8L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 142,651 MILES
Have changed a number of oxygen sensor but engine check keeps on coming with code p2238, low current circuit. What can be the problem?
Monday, June 14th, 2021 AT 12:11 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
Hi,

The code indicates an issue with the air/fuel sensors. There are two of them. Were both replaced? If you look at the attached pic below, I highlighted their locations.

As far as a low voltage issue, it could be corrosion at the connector. Also, it isn't uncommon for a wire to break down due to heat and basically create excessive resistance.

Let me know if both have been replaced. Also, if they have, let's confirm there isn't an issue with the sensor itself. Here is a link that explains how to check one:

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

Let me know.

Take care,

Joe

See pic below.
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Monday, June 14th, 2021 AT 9:03 PM

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