Drive DTCP0135 – Oxygen sensor heater isn't working (bank 1, sensor 1)
O2 sensor heater circuit (Bank 1 Sensor 1)
Fuel and air · generic OBD-II code
Normal driving is fine. Book it in when it suits you; it won't hurt anything in the meantime.
Check this first
Check the fuse for the sensor heaters first – it's a cheap thing to rule out.
What usually fixes it
In the order a good shop checks them. Typical total: $33–$350 at $130 an hour.
Fuse or relay
One blown fuse can take out the heater circuit.
Oxygen sensor
The heater inside the sensor burns out; the sensor is replaced as one part.
What the vehicle can tell you itself
A stored code is a headline, not the story. The vehicle also holds the conditions when it happened, how close the part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening right now. Drive DTC reads all of it with a USB adapter and a Windows PC – and it can't change a single setting on the vehicle.
See what your vehicle says about P0135
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.