OBD Guide
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P1564

ASCD Switch Malfunction

P1564 is an OBD-II diagnostic trouble code meaning: ASCD Switch Malfunction. Common causes: ascd switch failure, open or short circuit in the circuit. Estimated repair cost: $17–56.

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

Symptoms

  • Inability to activate cruise control
  • Spontaneous shutdown of the speed control system
  • Fault indication on the dashboard
  • Incorrect operation of cruise control buttons

Causes

  • ASCD switch failure
  • Open or short circuit in the circuit
  • Poor contact in connectors
  • Problems with the control unit
  • Mechanical damage to control buttons

How to Fix

  1. Check ASCD switch status
  2. Diagnose the control circuit for breaks and short circuits
  3. Check contacts in system connectors
  4. Scan the control unit for errors
  5. Replace ASCD switch if necessary

Related codes

P1565P1563

Error P1564 by Vehicle Brand

BMWBuickCadillacChevroletChryslerGMGMCOldsmobileSaturnVolkswagen

FAQ

What does the P1564 code mean?

P1564 is an OBD-II diagnostic trouble code that indicates: ASCD Switch Malfunction

What causes a P1564 error code?

The most common causes of P1564 include: ASCD switch failure; Open or short circuit in the circuit; Poor contact in connectors; Problems with the control unit.

How do I fix a P1564 diagnostic trouble code?

To fix P1564: Check ASCD switch status. Diagnose the control circuit for breaks and short circuits. Check contacts in system connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1564?

Yes, but get it checked soon

How much does it cost to fix P1564?

The estimated repair cost for P1564 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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