What does o2 sensor heater circuit malfunction mean?
The trouble code P0135 is a generic powertrain code indicating a problem in the front oxygen sensor on Bank 1, a heated oxygen sensor circuit that decreases time to enter closed loop. …
What is a heater oxygen sensor?
OBD II equipped vehicles use heated oxygen sensors. Heated oxygen sensors have an internal heater circuit that brings the sensor up to operating temperature more quickly than an unheated sensor. On some OBD II systems the PCM continuously monitors current flow through the heater circuit. …
What is the typical resistance of the oxygen sensor heater?
10-25 ohms
The resistance can range from 10-25 ohms, but check the specs. If it is open or has low resistance, it is probably the sensor.
How do you check the o2 sensor resistance?
How to test an Oxygen Sensor with a Multimeter. Switching the multimeter on, to ‘resistance’ mode. Connect the test leads to the heater power and ground connector pins or wires. Read the multimeter measurement, most of these heaters have an internal resistance of about 10Ω to 20Ω (when cold).
What does Bank 1 mean on an O2 sensor heater?
This code indicates that the Engine Control Module (ECM) has tested the oxygen sensor heater circuit and has found a problem with sensor 1 in bank 1. Bank 1 refers to the side of the engine that has the #1 cylinder. Bank 2 would be the opposite side of this.
What is the O2 sensor heater error code p0135?
Error Code P0135: O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1. The onboard diagnostic (OBD) code P0135 is an oxygen sensor heater circuit malfunction in bank 1, sensor 1. This code indicates that the Engine Control Module (ECM) has tested the oxygen sensor heater circuit and has found a problem with sensor 1 in bank 1.
What causes bank 1 oxygen sensor to malfunction?
Faulty heated oxygen sensor in bank 1, sensor 1 Heated oxygen sensor blown circuit fuse Heated oxygen sensor circuit open, shorted to ground Heated oxygen sensor circuit poor electrical connection First, visually check the electrical connections and wiring harness to the bank 1, sensor 1 oxygen sensor.