OBD Guide
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P1722

Estimated Vehicle Speed Signal

P1722 is an OBD-II diagnostic trouble code meaning: Estimated Vehicle Speed Signal. Common causes: speed sensor malfunction, wiring harness damage. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Incorrect speedometer readings
  • Gear shifting problems
  • Cruise control doesn't work
  • Check Engine light comes on
  • Unstable engine idling

Causes

  • Speed sensor malfunction
  • Wiring harness damage
  • Problems with sensor connectors
  • Engine control unit (ECU) malfunction
  • Mechanical damage to sensor drives

How to Fix

  1. Check the speed sensor and its connections
  2. Inspect the wiring harness for damage
  3. Check sensor connectors for corrosion or oxidation
  4. Test the ECU for errors
  5. Replace faulty speed sensor

Related codes

P0500P0501P0502

Error P1722 by Vehicle Brand

FordJaguarLincolnMazdaMercurySubaru

FAQ

What does the P1722 code mean?

P1722 is an OBD-II diagnostic trouble code that indicates: Estimated Vehicle Speed Signal

What causes a P1722 error code?

The most common causes of P1722 include: Speed sensor malfunction; Wiring harness damage; Problems with sensor connectors; Engine control unit (ECU) malfunction.

How do I fix a P1722 diagnostic trouble code?

To fix P1722: Check the speed sensor and its connections. Inspect the wiring harness for damage. Check sensor connectors for corrosion or oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1722?

Yes, but get it checked soon

How much does it cost to fix P1722?

The estimated repair cost for P1722 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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