HO2S Heater Control Circuit Bank 1 Sensor 2
The engine computer has found a problem in the heater circuit for the oxygen sensor after the catalytic converter on bank 1. The heater helps the sensor warm up quickly so the computer can control fuel mixture correctly. If the heater circuit fails, the check engine light comes on and emissions performance can suffer.
You can usually drive short term, but the vehicle may run less efficiently and emissions will be higher. Have it checked soon, especially if the engine runs poorly, fuel economy drops, or the light flashes.
P0036 means the powertrain control module has detected an abnormal condition in the heater control circuit for HO2S Bank 1 Sensor 2. This sensor is usually located after the catalytic converter on the bank with cylinder number 1. The fault may be in the sensor heater, wiring, fuse, relay, connector, or the PCM driver circuit.
It is usually a moderate fault. The car may still run normally, but emissions and fuel control can be affected.
You can clear it, but it will usually return if the heater circuit problem is still there.
Not always. The sensor heater is a common cause, but wiring, fuse, relay, and connector problems can cause the code too.
Yes, it often will because the check engine light is on and the heater system fault affects emissions readiness.