Nissan Error Code P1574: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
Error Code
P1574
Brand
Nissan
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Nissan error code P1574 indicates an ASCD (Automatic Speed Control Device) vehicle speed signal difference, meaning your cruise control system is detecting inconsistent speed readings between sensors. This typically occurs when there's a malfunction in the speed sensor circuits or the cruise control module itself.
Ad

Tools You'll Need

How to Fix Error Code P1574

  1. Turn Off Engine and Connect OBD2 Scanner

    Ensure the vehicle is parked safely away from traffic before beginning diagnostics.
  2. Check Vehicle Speed Sensor Connections

  3. Inspect Speed Sensor Wiring Harness

    Do not splice wires near moving parts or heat sources.
  4. Test Vehicle Speed Sensor Resistance

  5. Check ASCD Control Module

    Disconnect the battery negative terminal before removing any control modules.
  6. Clear Codes and Test Drive

    Test drive only in safe conditions with light traffic.

Parts You May Need

Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Vehicle speed sensor
Check Price on Amazon
ASCD control module
Check Price on Amazon
Automotive electrical wire
Check Price on Amazon
Ad

When to Call a Professional

Contact a professional mechanic if the error persists after checking sensors and wiring, if you're uncomfortable working with electrical systems, or if multiple speed-related codes appear simultaneously. Professional diagnosis may be needed to pinpoint intermittent issues or complex module problems.

Frequently Asked Questions

What causes Nissan P1574 error code?
P1574 is caused by inconsistent speed signals between the vehicle speed sensor and cruise control system. Common causes include faulty speed sensors, damaged wiring, corroded connections, or a malfunctioning ASCD control module.
Can I drive with P1574 code?
You can drive with P1574, but your cruise control system may not function properly or at all. The code itself doesn't affect basic vehicle operation, but it's recommended to fix it soon to restore full functionality.
How much does it cost to fix P1574?
Repair costs vary depending on the root cause. A speed sensor replacement typically costs $50-150 for parts plus labor. If the ASCD module needs replacement, costs can range from $200-500. Simple wiring repairs may only cost $50-100.
Will P1574 cause my Nissan to fail inspection?
P1574 may cause your vehicle to fail emissions inspection in some states, as it's an active diagnostic trouble code. Check your local inspection requirements, but it's best to resolve the issue before inspection.