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P0137 Fault-error code 02 SENSOR CIRCUIT LOW VOLTAGE BANK1 SENSOR2

Updated: Sep 14

What is P0137 fault-error code?


P0137 Fault-error code is an OBD-II (On-Board Diagnostics II) error code used to determine a problem with the vehicles' exhaust system. This error code means that the vehicle's oxygen sensor (O2 sensor) is giving a low voltage signal. Here's more information about error code P0137:


Meaning of P0137 Malfunction/error code:


The P0137 Trouble/error code indicates that the primary oxygen sensor on the vehicle (usually called bank 1, sensor 2) is sending a low voltage signal. This may indicate that the engine's fuel mixture is incorrect or exhaust emissions are not properly controlled.



P0137 Fault/error code Reasons:


There are several possible causes for the P0137 fault/error code. These can be:

  • Bad oxygen sensor

  • Incorrect connection or broken cable of the oxygen sensor

  • exhaust leak

  • Incorrect engine fuel mixture (too rich or too lean)

  • Incorrect air-fuel ratio

  • Fuel injectors problem


P0137 Fault/error code Symptoms:


Typical symptoms of a P0137 fault/error code may include decreased performance, increased fuel consumption, engine vibrations or erratic operation.



P0137 Fault/error code How to Determine:


The P0137 Fault/error code can be read from the vehicle using an OBD-II scanner. This scanner detects error codes in the vehicle and then shows the meanings and possible causes of these codes.


P0137

Errors Made While Correcting P0137 Malfunction/error code:


Mistakes made when trying to fix the P0137 fault/error code may include replacing the wrong oxygen sensor, neglecting wiring connections, or not paying attention to the exhaust system.



Severity of P0137 Fault/error code:


Fault/error code P0137 can affect exhaust emissions and engine efficiency. In the long term, fuel consumption may increase and engine performance may decrease. Therefore, the severity of the error code depends on how long the vehicle has been driven in these conditions.


P0137 Fault/error code Solution:


The following actions can be taken to solve the P0137 Fault/error code:

  • Replacing the oxygen sensor

  • Checking the wiring and connections of the oxygen sensor

  • Repairing exhaust leak

  • Checking fuel injectors

  • Setting the wrong air-fuel ratio



P0137 Malfunction/error code Things to be evaluated:


Considerations for the P0137 Fault/error code may include:

  • Evaluate whether the oxygen sensor is aging, taking into account the age and mileage of the vehicle

  • Checking for any leaks or damage on the exhaust system

  • Evaluating the suitability of the fuel mixture by examining the operating conditions of the engine


The P0137 Fault/error code can be a serious problem for vehicle owners and should generally be resolved as soon as possible because it can cause negative effects on the engine and emissions system in the long run.



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