1998 Toyota Camry Air-fuel sensor

1998 TOYOTA CAMRY
155,000 MILES • 6 CYL • 4WD • AUTOMATIC
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RMOELLER
  • MEMBER
  • 2 POSTS
Check engine light is on. OBDII is telling me code P0125 ( Insuficient coolant temp.for closed loop fuel control) and when I select Toyota I get P1135 and P1133 codes ( Air-Fuel sensor heater circuit response mulfunction). I am trying to understand what could be wrong.I am a little confused with sensor locations. Which one is bank 1 and 2 sensor 1 or 2. I need to know how to test the sensors, and what else could cause the codes if the sensor itself is not bad. I heard about sensor contamination bt antifreeze or oil but I am not sure how it could happen and where I should look into. Thanks for inputs in advance.
Renate
P.S I had a bad thermostat that I replaced and the temp. is normal now. I cleared code but keep coming back.
Nov 28, 2009 at 11:30 PM
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BMRFIXIT
  • CAR REPAIR CONTRIBUTOR
  • 19,053 POSTS
bank 1 is by the firewall bank 2 is by the radiator bank 1 sensor 1 is the O2 sensor before the catalytic converter on by the fire wall bank 2 sensor 1 is the o2 sensor before the catalytic converter on by the radiator


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Nov 29, 2009 at 7:11 AM
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