Check engine light on and code p2238

2008 TOYOTA CAMRY
160,000 MILES • 4 CYL • 2WD • AUTOMATIC
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VANESSACASTILLO412
  • MEMBER
  • 1 POST
My check engine light came on for my O2 sensor upstream so I replaced it and the light went off for about a week. Now my check engine light came back on and code p2238 is coming up. I bought the right part which was recommended, can it be the sensor again or what can be causing this code???
May 3, 2021 at 1:04 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

This is an electrical issue, not a component issue. Codes do not identify failed parts, just failed systems.

I attached a flow chart for you for the code. It indicates a low voltage to the connector for the heater circuit. You need to verify the power at the connector.

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Keep me updated on your results.

Roy
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May 3, 2021 at 11:10 PM
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