OBD Guide
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C1571

Vehicle Speed Signal Malfunction

C1571 is an OBD-II diagnostic trouble code meaning: Vehicle Speed Signal Malfunction. Common causes: faulty speed sensor, open or shorted wiring harness. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Incorrect operation of the speedometer
  • Switching ABS/ESP systems into emergency mode
  • Gear shifting problems
  • Malfunction indicator light comes on

Causes

  • Faulty speed sensor
  • Open or shorted wiring harness
  • Poor contact in connectors
  • ABS or ESP module malfunction
  • Transmission problems

How to Fix

  1. Check the condition of the speed sensor and its wiring
  2. Check speed sensor resistance
  3. Inspect connectors for oxidation or damage
  4. Check the speed signal on an oscilloscope
  5. If necessary, replace the sensor or repair the wiring

Related codes

C0035C0040P0500

FAQ

What does the C1571 code mean?

C1571 is an OBD-II diagnostic trouble code that indicates: Vehicle Speed Signal Malfunction

What causes a C1571 error code?

The most common causes of C1571 include: Faulty speed sensor; Open or shorted wiring harness; Poor contact in connectors; ABS or ESP module malfunction.

How do I fix a C1571 diagnostic trouble code?

To fix C1571: Check the condition of the speed sensor and its wiring. Check speed sensor resistance. Inspect connectors for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1571?

Limited driving only, diagnose soon

How much does it cost to fix C1571?

The estimated repair cost for C1571 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat