OBD Guide
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C2173

Vehicle Speed Or Engine Speed Signal Malfunction

C2173 is an OBD-II diagnostic trouble code meaning: Vehicle Speed Or Engine Speed Signal Malfunction. Common causes: vehicle speed sensor malfunction, engine speed sensor malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect speedometer readings
  • No response from cruise control
  • Delayed gear shifting
  • Check Engine Light Is On

Causes

  • Vehicle speed sensor malfunction
  • Engine speed sensor malfunction
  • Wiring harness damage
  • ECU problems
  • Short circuit in the circuit

How to Fix

  1. Check engine speed and rpm sensors
  2. Inspect the wiring harness for damage
  3. Check connections and contacts
  4. Scan the ECU for additional errors
  5. Replace faulty components

Related codes

P0500P0501P0720

FAQ

What does the C2173 code mean?

C2173 is an OBD-II diagnostic trouble code that indicates: Vehicle Speed Or Engine Speed Signal Malfunction

What causes a C2173 error code?

The most common causes of C2173 include: Vehicle speed sensor malfunction; Engine speed sensor malfunction; Wiring harness damage; ECU problems.

How do I fix a C2173 diagnostic trouble code?

To fix C2173: Check engine speed and rpm sensors. Inspect the wiring harness for damage. Check connections and contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2173?

Limited driving only, diagnose soon

How much does it cost to fix C2173?

The estimated repair cost for C2173 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat