1135-1155 wont clear
1 - 6 of 6 Posts
Joined
·
3,813 Posts
To start, P1135 & P1155 refer to air:fuel ratio sensors, not O2 sensors. Your 2002 Solara V6 has 2 A/F sensors and 2 O2 sensors. Did you replace the correct sensors? The A/F sensors are upstream of the respective cats in the exhaust system (the O2 sensors are downstream of the respective cats).
Second, the codes mean there is a problem in the heater circuit involving these sensors. For both to have problems at exactly the same time would cause me to check if the fuse and/or relay involving this dedicated heater circuit for these 2 sensors may be bad instead of the sensors themselves. Most times, the A/F sensor heaters themselves fail, but there are times when a fuse blows or a relay no longer closes its contacts properly.
I just realized people were having trouble with air/fuel ratio sensors too. Code book just said sensor, not A/F or o2, so my mechanic replaced the one right on the exhaust manifold and the one downstream at the cat. He bought o2 sensors. I'll check with the parts store to see about A/F sensors. Would you happen to know location of A/F sensors? I'm assuming one is on back of motor near firewall? Thanks!
The A/F sensors are the sensors located on the manifold. The O2 sensors are located further down on the pipe.
Two bad A/F sensors is HIGHLY unlikely.
Which sensors did you use (Denso, Bosch, NTK)?
Stop throwing parts at it and have a look at all the fuses.
Two bad A/F sensors is HIGHLY unlikely.
Which sensors did you use (Denso, Bosch, NTK)?
Stop throwing parts at it and have a look at all the fuses.
Joined
·
3,813 Posts
Can you give me your model code (from the sticker on your driver door area)? It should be something to the effect of MCV20L-GCPNKA. Need to have this exact model number for your vehicle. With it, I can send you a diagram of where your A/F & O2 sensors are, and what the Toyota P/N's are, which I think will help you.
I figured it out today. There are 2 upstream o2 sensors, 1 down stream. AutoZone and Oreilly's didn't say anything about there being 3, and I didn't ask out of ignorance. The hardest one to replace is bank 1 sensor 2(or was it sensor 1?), accessed from under the car on back of motor. The 2 upstream sensors are the same part #. Problem solved. Thank you for your help!:clap:
1 - 6 of 6 Posts
