The OBD scanner comes up with 2 codes – P1135 and P0125. Anybody have thoughts on what strategy should be used to solve 2 code problems. The Air Fuel Ratio sensor is expensive to experiment with (P1135) – same for O2 sensor (P0125). … otherwise you could damage the catalytic converters. The top sensor is easy to get at and check/measure, the …
No detectable symptoms other than decreased fuel mileage, that smell and, if not fixed, a damaged catalytic converter. Possible causes for P0125 = defective thermostat, defective ECT (engine coolant temperature) sensor/circuit or low coolant. For your Toyota, P1135 is the Heater Circuit IN the A/F Sensor (Bank 1 Sensor 1) and NOT the heater in your car. …
P1135 and P0125 code – Toyota Nation Forum
My 2000 Sienna showing P1135 and P0125 code. This is for A/F Sensor1 and bank1. I am not sure exactly where it is located. I saw one near radiator and one is near catalytic converter and one in the midle (can be seen from bottom of engine). what is OEM P/No. I need to buy. If it is bottom one, how I can replaced. Thanks in advance ..
How to fix the p1135 code. You have now determined that p1135 code is as a result of a fault in the air-fuel ratio bank 1. Sensor1. Two options are now at your disposal. You can choose to replace the whole sensor, or you can …