I am getting a P1135 code on my 2005 Toyota Camry.I have replaced the A/F sensor first with a Bosch then with a Denso. I am still getting the same trouble code almost immediately after starting the car up. I checked the connector for power at the connector and I have power at the lower right male connector. What is my next step?
P1135: AFR Sensor Heater Circuit Malfunction Bank 1 Sensor 1
As discovered, the malfunction doesn't necessarily have to be in the sensor itself.
Possible causes for a P1135 code include:
Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1(already ruled out by replacement)
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open or shorted
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
A faulty ECM is possible, but not probable, so the CEL is likely due to a break in the heater circuit which you will need to trace.
A very nice video by Schrodinger's Box shows him diagnose a similar problem on a Nissan Maxima.