What code is P0138?
What code is P0138?
What the P0138 code means. 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 does p0137 mean on a check engine light?
P0137 is a diagnostic trouble code (DTC) for “O2 Sensor Circuit Low 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. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic.
What is the cause of the code p0138?
What Is the Cause of Code P0138? 1 Faulty O2 Sensor 2 Short to battery voltage in O2 sensor signal circuit 3 Corroded wiring 4 Fuel pressure too high 5 Engine coolant temperature sensor
How does code p0137 work in a PCM?
To understand code P0137 better, you have to first understand how O2 sensors work together. Upstream O2 sensors (sensor 1) produce varying voltages that enable the PCM to adjust the air-fuel mixture from rich to lean, and vice versa.
What is the p0137 code for oxugen sensor 2?
Code P0137 triggers when the PCM detects that the signal from oxugen sensor 2 on Bank 1 is below a specific value for a certain amount of time. The Bank 1 portion of the code refers to the side where the #1 cylinder is located. There are two O2 sensors in your vehicle.
What causes the p0138 code on an engine?
What causes the P0138 code? 1 The engine control module (ECM) sees the voltage of the O2 sensor for bank 1 sensor 2 above 1.2 volts… 2 The ECM detects the voltage high problem and turns on the Check Engine Light. 3 The ECM uses other O2 sensors to try and control the fuel injection with their values.
Can a check engine light cause a p0137 code?
Usually, the only symptom associated with code P0137 is an illuminated check engine light. Keep in mind that symptoms may vary and some cases may not cause a particular observable symptom to happen. Many issues can trigger the P0137 code, from a faulty oxygen sensor to an exhaust leak. This can make it difficult to accurately diagnose the problem.
To understand code P0137 better, you have to first understand how O2 sensors work together. Upstream O2 sensors (sensor 1) produce varying voltages that enable the PCM to adjust the air-fuel mixture from rich to lean, and vice versa.
Code P0137 triggers when the PCM detects that the signal from oxugen sensor 2 on Bank 1 is below a specific value for a certain amount of time. The Bank 1 portion of the code refers to the side where the #1 cylinder is located. There are two O2 sensors in your vehicle.
