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P0059 Fault-Error code HO2S Heater Resistor (Bank 2, Sensor 1)

Updated: Oct 5

What is P0059 Fault/Error code?


The P0059 Fault/Error code is an OBD-II (On-Board Diagnostics II) error code received from a vehicle. This error code indicates problems with the vehicle's exhaust system and is usually related to an oxygen sensor (O2 sensor). Here is information about the meaning, causes, symptoms, identification, correction and severity of the P0059 Fault/Error code:


P0059

Meaning of Fault/Error code P0059


The Fault/Error code P0059 indicates that a heating circuit resistance deficiency has been detected for the vehicle's oxygen sensor, called bank 2, sensor 1. The oxygen sensor measures the oxygen levels in the exhaust gases and transmits this information to the engine control unit (ECU). The heating circuit is used to quickly heat the sensor in cold weather conditions to ensure the fast and accurate operation of the oxygen sensor.



P0059 Fault/Error Code Causes


The main causes of the P0059 Fault/Error code can be:

  1. The oxygen sensor is damaged or malfunctioning.

  2. The connections of the oxygen sensor are loose or corroded.

  3. Lack of resistance of the oxygen sensor heating circuit.

  4. Cable interruptions or connection problems.

  5. Engine control unit (ECU) problems.



P0059 Fault/Error code Symptoms


Symptoms of Fault/Error code P0059

  1. decrease in the performance of the vehicle,

  2. decrease in fuel efficiency,

  3. Feeling of suffocation or jamming of the engine

  4. There may be symptoms such as increased emissions of the vehicle.



How to Identify P0059 Fault/Error code


The P0059 Fault/Error code is determined using an OBD-II scanner or diagnostic device. Error codes from the vehicle are used to diagnose the vehicle's problems.


P0059 Errors When Correcting Fault/Error Code


The following errors should be avoided when correcting the P0059 Fault/Error code:

  1. Replacement of parts without identifying the root cause of the problem instead of quickly replacing the sensor.

  2. Failure to properly check the connections of the sensor or cables.

  3. Replacing the oxygen sensor with an incorrect make or model.



How Serious is the P0059 Malfunction/Error code


The P0059 Fault/Error code can be a serious problem, as it can affect the control of the engine's fuel mixture and emissions. If this problem is neglected, the vehicle may consume more fuel and exhaust emissions may increase. In addition, there may be a decrease in engine performance. Therefore, it is recommended to resolve the Fault/Error code P0059 as soon as possible.



Ways to Resolve P0059 Fault/Error Code


The solution of the P0059 Fault/Error code can be done by the following methods:

  1. Replacing the oxygen sensor: Replace the defective sensor with a new, suitable oxygen sensor.

  2. Checking the connections: Make sure that the cables and connections of the oxygen sensor are in order.

  3. Checking heating circuit resistance deficiency problems: Make sure that the resistance of the heating circuit is appropriate.

  4. ECU problems: If you think the ECU is a problem, have these issues checked by a professional mechanic or service.



What to evaluate for the P0059 Fault/Error code includes the steps necessary to diagnose and fix the problem. Therefore, if you are seeing this error code on your vehicle, it is important to consult with a professional mechanic to resolve the issue as soon as possible.

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