code P0135

1999 HONDA CIVIC

100 MILES • 4 CYL • 2WD • MANUAL

CHEV-64

MEMBER
2 POSTS
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check engine light on, pulled codes under glove box (code 41) put in new primary 02 sensor, reset computer several times, light still comes on. Bought an OBDII, get code P0135, erased codes a few times, light still comes on. Have 17.2 ohms at heater terminals. Is new sensor possibly faulty? Is there something else that would be causing computer to think that primary heater circuit is not right? Thanks in advance, Mike

Mar 7, 2010 at 12:25 AM

F4I_GUY

CAR REPAIR CONTRIBUTOR
3,302 POSTS

At the o2 sensor, with the key on or engine running you should have power and ground at the heater circuit wires. Resistance isn't going to tell you anything really. If you have power and ground, you might just have a faulty o2. (assuming you've replaced the right one)

Mar 7, 2010 at 1:29 PM

CHEV-64

MEMBER
2 POSTS

Thanks for the reply. I changed sensor that was sprecified in codes book. How do I check positive and ground as you stated? Mike

Mar 7, 2010 at 3:13 PM

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