The P2238 automobile fault code indicates a problem with the Front Heated Oxygen Sensor Bank 1. This can cause the Engine Light to turn on, indicating a potential issue with the vehicle. The cause of this fault code could be a faulty sensor, an open or shorted harness, or a poor electrical connection.

It is important to visually inspect the wiring harness and connectors for any damage or corrosion.

The repair time for this issue is estimated to be around 1.0.

To interpret the fault code, it is recommended to check the “Possible Causes” listed above and follow the suggested fix.

Repair Importance Level6.67 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of p2238 fault code. Here are the symptoms to look out for:

  • The P2238 fault code in an automobile can cause several symptoms.
  • The most common symptom is the illumination of the engine light or service engine soon warning light.
  • Other symptoms include a decrease in fuel efficiency, rough idling, engine misfires, and difficulty starting the engine.
  • Additionally, the vehicle may experience a loss of power or acceleration, and the exhaust emissions may be higher than normal.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code P2238 can be caused by a faulty oxygen sensor, open or shorted harness, or poor electrical connection.

  • The automobile fault code P2238 can be caused by a faulty front heated oxygen sensor bank 1.
  • It can also be caused by an open or shorted front heated oxygen sensor bank 1 harness.
  • Additionally, a poor electrical connection in the front heated oxygen sensor bank 1 circuit can also trigger this fault code.

To fix the p2238 automobile fault code, check the possible causes and inspect the related wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p2238, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P2238 refers to the O2 sensor circuit high voltage bank 1 sensor 1. The diagnosis involves checking the wiring and connections of the sensor, as well as the sensor itself.

The fixing cost is influenced by the estimated repair time, which is 1.0 hour. Most auto repair shops charge between $75 and $150 per hour, which affects the overall cost of fixing the issue.

The P2238 code refers to the O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 1.

The Front Oxygen Sensor (O2 Sensor 1) is placed into the exhaust manifold.

It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia.

The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM).

The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio.

The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

What are the possible causes of the P2238 fault code?

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the P2238 fault code. This code is caused by a faulty Front Heated Oxygen Sensor Bank 1, an open or shorted Front Heated Oxygen Sensor Bank 1 harness, or a poor electrical connection in the Front Heated Oxygen Sensor Bank 1 circuit. To fix this issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the wiring harness and connectors related to the Front Heated Oxygen Sensor Bank 1?

If you’re experiencing an Engine Light ON (or Service Engine Soon Warning Light) due to a faulty Front Heated Oxygen Sensor Bank 1, you can visually inspect the related wiring harness and connectors to fix the issue. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. This will help you identify if the Front Heated Oxygen Sensor Bank 1 harness is open or shorted, or if there is a poor electrical connection in the circuit.

What are the consequences of not fixing the P2238 fault code?

Ignoring the P2238 fault code, which indicates a faulty front heated oxygen sensor or related wiring issues, can lead to serious engine problems. The engine light will remain on, indicating a problem, and the vehicle may fail an emissions test. It is important to visually inspect the wiring harness and connectors and check for damaged components to avoid further damage to the engine.

p2238 error fault code explained

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to a faulty Front Heated Oxygen Sensor Bank 1, an open or shorted harness, or poor electrical connection.

To fix it, visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

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