What causes oxygen sensor High Voltage?

What causes oxygen sensor High Voltage?

The high voltage condition from the O2 sensor is indicating a lack of oxygen in the exhaust or other related problems, such as a leaking fuel injector or a broken up catalyst inside.

What is the OBD code for bank 1 sensor 2?

P0138 is the OBD-II generic code indicating the O2 sensor for bank 1 sensor 2 fails to have a lower voltage output below 1.2 volts for more than 10 seconds indicating a lack of oxygen in the exhaust stream.

What is the diagnostic code for O2 sensor circuit high voltage?

P0138 is a diagnostic trouble code (DTC) for “O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

What does the p0132 sensor circuit high voltage mean?

02 Sensor Circuit High Voltage (Bank 1 Sensor 1) What the P0132 code means When the P0132 trouble code has been stored by the power control module, it is an indication of a problem with the 02 oxygen sensor. Specifically, that the oxygen sensor has stayed at a high voltage for too long without switching back.

What does the OBD-II scanner do for the oxygen sensor?

Uses the OBD-II scanner to view live data and monitor the voltage levels going to the oxygen sensor to ensure proper voltage In most cases, the oxygen sensor will need to be replaced to fix the problem and clear the P0132 trouble code from the power control module (PCM).

P0138 is the OBD-II generic code indicating the O2 sensor for bank 1 sensor 2 fails to have a lower voltage output below 1.2 volts for more than 10 seconds indicating a lack of oxygen in the exhaust stream.

How to check O2 oxygen sensor high voltage bank 1, sensor 2?

How to Check. In order to check the O2 Oxygen Sensor Circuit High Voltage Bank 1, Sensor 2, the scanner will show the P0138 code, which indicates the error, and the following should complete the checklist: Check connection to O2 sensor for corrosion as well as wire degradation.

Is the OBDII O2 sensor a voltage sensor?

A very important thing to note. Sensor 1 on this engine IS NOT a O2 Sensor, it is a AIR/FUEL RATIO SENSOR!!! This sensor works very differently than a O2 Sensor, it outputs a steady voltage, it DOES NOT swing rapidly like a O2 Sensor.

When to replace Bank 1 downstream O2 sensor?

If the O2 sensor is reading high voltage and the fuel pressure and coolant temperature are within spec, replace the bank 1 downstream O2 sensor. For error code P0138, one or more of the below repairs may be needed to solve the underlying issue.