[SOLVED] P2631 Code: Fixing High Oxygen Sensor Pumping Current Trim

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the automobile fault code P2631.

This code indicates a problem with the Heated Oxygen Sensor (HO2S) or its related wiring harness and connectors. The HO2S may be faulty, or its circuit may have a poor electrical connection or be open or shorted. The repair importance of this code is moderate, and the difficulty level is low.

To fix this issue, you need to visually inspect the wiring harness and connectors for any damage or corrosion. You should also check for broken, bent, or pushed out connector pins. The repair time for this issue is around 1.0 hour.

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 due to the p2631 fault code.

Here are the symptoms to look out for:

  • The P2631 fault code in an automobile can cause the following symptoms: the engine light or service engine soon warning light will turn on, indicating a problem.
  • The vehicle may experience a decrease in fuel efficiency, leading to more frequent trips to the gas station.
  • The car may also have difficulty starting or may stall while driving.
  • Additionally, the transmission may shift roughly or not shift at all, causing a jerking sensation while driving.
  • These symptoms can be frustrating and potentially dangerous, so it is important to address the issue as soon as possible.

The automobile fault code P2631 can be caused by a faulty HO2S, open or shorted HO2S harness, or poor electrical connection.

  • The automobile fault code P2631 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.

To fix the automobile fault code p2631, check the possible causes and inspect the related wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p2631, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and broken, bent, pushed out, or corroded connector’s pins.
  • Ensure that everything is in good condition.
  • The estimated repair time for this fix is 1.0 hour.

The automobile fault code P2631 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 P2631 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 P2631 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.

The PCM uses this value to compensate for the variance in the pumping current signal. If the PCM determines the resistance value is too high, the test fails and the P2631 code is triggered. This code indicates an issue with the Oxygen Sensor Pumping Current Trim Circuit High Bank 2 S.

What are the possible causes of the P2631 fault code?

If you’re experiencing the P2631 fault code, you may notice that your engine light is on. This code is typically 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 the issue, it’s important to visually inspect the wiring harness and connectors, checking for any damaged components or broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors related to the Heated Oxygen Sensor (HO2S)?

If you’re experiencing an illuminated Engine Light or Service Engine Soon Warning Light, it could be due to 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, 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 any issues and determine the necessary steps to resolve them.

What are the consequences of not fixing the P2631 fault code?

Ignoring the P2631 fault code can lead to serious consequences such as reduced fuel efficiency, engine misfires, and damage to the catalytic converter. The fault code is caused by a faulty Heated Oxygen Sensor (HO2S) or a poor electrical connection in the HO2S circuit. It is important to visually inspect the wiring harness and connectors and check for damaged components to fix the issue.

p2631 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. Check for broken, bent, pushed out, or corroded connector pins.

Scroll to Top