If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the P2628 fault code. This code indicates a problem with the Heated Oxygen Sensor (HO2S) or its related wiring harness and connectors. The cause could be a faulty HO2S, an open or shorted HO2S harness, or a poor electrical connection in the HO2S circuit.

The importance of repairing this issue lies in the fact that it affects the engine’s performance and fuel efficiency.

The repair difficulty is moderate, and it takes around 1.0 hour to fix.

To interpret the fault code, you need to check the possible causes listed above and visually inspect the related wiring harness and connectors.

Repair Importance Level10.0 (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 p2628 fault code.

Here are the symptoms to look out for:

  • The P2628 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include a decrease in engine power, reduced fuel efficiency, and rough idling.
  • Additionally, the vehicle may experience stalling or hesitation during acceleration, and there may be a noticeable decrease in overall performance.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code P2628 can be caused by a faulty HO2S, open or shorted HO2S harness, or poor electrical connection.

  • The automobile fault code P2628 can be caused by a faulty Heated Oxygen Sensor (HO2S).
  • It can also be caused by an open or shorted Heated Oxygen Sensor (HO2S) harness.
  • Additionally, a poor electrical connection in the Heated Oxygen Sensor (HO2S) circuit can also trigger this fault code.

Below are the possible fixes for the automobile fault code p2628, including inspecting wiring harness and connectors for damage.

  • To fix the automobile fault code P2628, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any 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 P2628 can be diagnosed and fixed within an estimated repair time of 1.0 hour.

The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of diagnosis and fixing the P2628 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The P2628 code is related to the Universal Heated Oxygen Sensor (HO2S) connector. A resistor is installed in the connector to account for part to part variance. The Powertrain Control Module (PCM) determines the value of this resistor by taking multiple measurements during each ignition ON event.

If the PCM determines the resistance value is too high, the test fails and the P2628 code is triggered.

This code specifically refers to the Oxygen Sensor Pumping Current Trim Circuit being high in Bank 1 Sensor 1.

What are the possible causes of the automobile fault code P2628?

If you see the engine light on or the service engine soon warning light, it could be due to the P2628 fault code. This code is usually caused by a faulty Heated Oxygen Sensor (HO2S), an open or shorted HO2S harness, or a poor electrical connection in the HO2S 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 related wiring harness and connectors for the P2628 fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to the P2628 fault code, you may need to visually inspect the related wiring harness and connectors. This is because the cause of the issue could be a faulty Heated Oxygen Sensor (HO2S), an open or shorted HO2S harness, or a poor electrical connection in the HO2S circuit. To fix the problem, check the possible causes listed above and inspect the wiring harness and connectors for any damage or corrosion. Look for broken, bent, pushed out, or corroded connector’s pins.

What are the steps to take if I find damaged components or broken, bent, pushed out, or corroded connector’s pins for the P2628 fault code?

If you encounter damaged components or broken, bent, pushed out, or corroded connector’s pins for the P2628 fault code, start by visually inspecting the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. This will help you identify the root cause of the problem. Once you have identified the issue, take the necessary steps to fix it.

p2628 error fault code explained

If your engine light is on, it could be due to a faulty Heated Oxygen Sensor (HO2S), an open or shorted HO2S harness, or a poor electrical connection.

To fix the issue, visually inspect the wiring harness and connectors for damage or corrosion, and check for broken or bent pins.

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