Engine-Codes - Mercedes-benz - P1031 MERCEDES-BENZ

P1031 MERCEDES-BENZ - Heated Oxygen Sensor Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1031 MERCEDES-BENZ Possible Causes

  • Faulty Heated Oxygen Sensor (HO2S)
  • Heated Oxygen Sensor harness is open or shorted
  • Heated Oxygen Sensor circuit poor electrical connection

How do I fix code P1031 MERCEDES-BENZ?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P1031 MERCEDES-BENZ code

Labor: 1.0

The cost of diagnosing the P1031 MERCEDES-BENZ code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)


Heated Oxygen Sensor Malfunction is the generic description for the P1031 Mercedes-benz code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information abouth the P1031 Mercedes-benz OBDII code.

Still have questions? Please post your question on our Comments Section of the main page for more information.


P1031 MERCEDES-BENZ More Information

Need more information on how to fix the P1031 MERCEDES-BENZ code?
Get Access to Factory Service Manuals

Need more help?

Get the P1031 Mercedes-benz code diagnosed by a professional: Find a repair shop in your area