What does trouble code P0138 mean?

What does trouble code P0138 mean?

When trouble code P0138 is set, this indicates that there is a high voltage (steadily above . 9 volts) for more than 10 seconds indicating a lack of oxygen in the exhaust stream and an abundance of fuel at sensor 2 on the bank 1 of the engine.

What does the p0138 code on a car mean?

Code P0138 means that your powertrain control module (PCM) has detected that the voltage signal from the rear O2 sensor is too high. What is an Oxygen Sensor? All modern cars have at least two oxygen sensors.

What causes a p0140 code on an O2 sensor?

The causes for a P0140 code are fairly few. They could be any of the following: Shorted heater circuit in O2 sensor. (Usually requires replacement of heater circuit fuse in fuse block also)

What is the oxygen sensor code on a Chevy Equinox?

Chevy Equinox P0138: Oxygen Sensor High Voltage (Bank 1 -Sensor 2) P0138 is a common OBDII code that occurs in many vehicles, including theChevy Equinox.

When does the O2 sensor turn on the Check Engine light?

The engine control module (ECM) sees the voltage of the O2 sensor for bank 1 sensor 2 above 1.2 volts when the ECM has commanded the fuel to a targeted lean condition on that bank of the engine. The ECM detects the voltage high problem and turns on the Check Engine Light.

Code P0138 means that your powertrain control module (PCM) has detected that the voltage signal from the rear O2 sensor is too high. What is an Oxygen Sensor? All modern cars have at least two oxygen sensors.

Chevy Equinox P0138: Oxygen Sensor High Voltage (Bank 1 -Sensor 2) P0138 is a common OBDII code that occurs in many vehicles, including theChevy Equinox.

The engine control module (ECM) sees the voltage of the O2 sensor for bank 1 sensor 2 above 1.2 volts when the ECM has commanded the fuel to a targeted lean condition on that bank of the engine. The ECM detects the voltage high problem and turns on the Check Engine Light.