Generic OBD-II OBD-II Error Code P0721

Generic OBD-II OBD-II Major Speed Sensors

Model: OBD-II | Code: P0721

Applicable Systems
OBD-II

Symptoms

The sensor signal is outside the expected range or performance is below specification.

Possible Causes

  • Sensor reading out of calibrated range due to wear or contamination
  • Mechanical component affecting sensor performance
  • Wiring resistance high causing signal degradation

Troubleshooting Steps

  1. Step 1: Compare sensor reading with expected value at current conditions
    Reading deviates from expected
  2. Step 2: Inspect related mechanical components for wear
    Mechanical issue identified
  3. Step 3: Check wiring for high resistance or corrosion
    Wiring resistance normal

How to Reset

To reset: Clear the DTC after correcting the sensor or mechanical issue.

Comments (0)

Share your experience to help others facing the same problem.

No comments yet. Be the first to share your experience!

Leave a Comment

Source: SAE J2012 OBD-II Diagnostic Trouble Codes, SAE International

Category: OBD-II