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DTC DATABASE • OBD-II
P0720

Output Speed Sensor Circuit

This page explains common reasons this code appears and what should be checked before parts are replaced.

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Common causes

What can trigger P0720?

  • Transmission speed sensor fault
  • Wiring issue
  • Internal gearbox signal problem
Typical symptoms

What you may notice

  • Harsh or incorrect shifting
  • Speed signal missing
  • Transmission limp mode

Do not diagnose from the code alone

The code alone does not identify the failed part. Live data, wiring checks and manufacturer-specific subcodes may be required before replacing components.

Full scanLive dataWiring checksSensor plausibilityECU / module communication
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