Trouble code PO125

Tiny
ITOBOY1
  • MEMBER
  • 1998 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 144,000 MILES
I have a trouble code of PO125 and need to know what I need to change.
Tuesday, July 11th, 2017 AT 9:06 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You need to check oxygen sensor in front of catalytic converter. The coolant temperature is too low to go into closed loop. See picture on how to test it.
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Tuesday, July 11th, 2017 AT 9:29 AM

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