P1574 Nissan and Infiniti cruise control (ASCD) vehicle speed sensor fault

ASCD vehicle speed sensor circuit

P1574 in short

On Nissan and Infiniti, P1574 means the cruise control (ASCD) vehicle speed sensor circuit has a fault. It usually appears with other speed sensor codes such as P0720. Nissan ties it to moisture on the secondary speed sensor pins. Have the sensors checked soon, and stop driving if the car will not accelerate.

Nissan calls its cruise control system ASCD. P1574 is set when the vehicle speed signal that system relies on is wrong or does not agree with other speed sources. Scan tools label it ASCD vehicle speed sensor.

Nissan bulletin NTB14019 puts P1574 on a list of speed sensor codes (with P0500, P0720, P1715 and P2765) that may come from moisture or corrosion on the secondary speed sensor pins; the repair is to clean the connector and replace the secondary speed sensor. A 2007 Altima owner had both transmission speed sensors replaced because of burning or rubbing from improper spacing.

Owners with Q50, Versa Note and Altima cars report P1574 with P0720 and a car that hesitated, would not accelerate or stopped changing gears. This is the code to treat as a speed sensor problem, not just a cruise control problem.

Pick your make

P1574 is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Secondary speed sensor connector moisture or sensor failure

    Supported by vehicle data
    Why it ranks here
    Nissan NTB14019 on the 2014 Rogue says moisture or corrosion on the secondary speed sensor pins can set P1574 with other speed codes, and calls for cleaning the connector and replacing the sensor. Summary only.
    What would change this
    Rises if the connector shows moisture or corrosion and the speed signal drops out. Falls if the pins are clean and dry and the sensor tests good.

  2. Speed sensor spacing or heat damage (2007 Altima)

    Supported by vehicle data
    Why it ranks here
    An Altima owner says both speed sensors were burned or rubbing because of improper spacing and were replaced with new spacers. One complaint.
    What would change this
    Rises if the sensor shows burn or rub marks. Falls if the sensor and its mounting look normal.

  3. Vehicle speed sensor circuit or sensor fault

    Possible — needs testing
    Why it ranks here
    TAT scandata and the Q50 scan readout describe P1574 as a speed sensor circuit fault, with P0720 and P0500 stored alongside, but they do not name the failed part.
    What would change this
    Rises if live data shows a speed signal that drops out or disagrees. Falls if both speed signals read plausibly.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all codes. Note P0720, P0500, P1715 and P2765 stored with P1574.

    Low riskTool: scan tool

    • IfOther speed sensor codes are stored

      It meansLook at the speed sensors and connectors.

      Go to step 2

    • IfP1574 is alone and cruise control does not work

      It meansCheck the sensor circuit.

      Go to step 2

  2. Have the secondary speed sensor connector checked for moisture and corrosion and the sensor and its mounting for damage or spacing problems.

    Best left to a shopTool: scan tool with live data

    Warning:The sensor is on the transmission under the car and the fluid can be hot. Leave this to a shop.

Symptoms

  • Check engine light
  • Cruise control inoperative
  • Hesitation or poor shifting
  • Car will not accelerate Gets more serious: stop and have it checked.

How to fix

  1. Ask a dealer whether Nissan bulletin NTB14019 or a newer one applies to your VIN.

Parts and cost context

  • Transmission control module (TCM):The transmission computer is not the first suspect; Nissan points at the secondary speed sensor. Labor varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Nissan

  • 2014 · Rogue

    Supported by vehicle data

    Nissan NTB14019 covers P1574 with other speed sensor codes caused by moisture on the secondary speed sensor pins.

  • 2007 · Altima

    Supported by vehicle data

    An owner had both transmission speed sensors replaced for burning or rubbing from improper spacing, with P1574, P1715 and P0720.

  • 2014 · Versa Note

    Supported by vehicle data

    A dealer pulled P0500, P1574, P1715, P1720 and P0720 after the car would not accelerate and replaced two speed sensors.

  • NTB14019Status unverified

    MIL with speed sensor DTCs including P1574 and moisture on the secondary speed sensor pins

    2014rogue · NHTSA 10192336

    Clean the harness connector with electric cleaner and replace the secondary speed sensor when moisture or corrosion is present on the pins.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Infiniti

  • 2015 · Q50

    Supported by vehicle data

    An owner lists P0500, P0720 and P1574 with a car that stopped changing gears; the scan text reads ASCD vehicle speed sensor.

  • P0720Transmission output shaft speed sensor circuit fault

    Shares causes Supported by vehicle data

    Nissan lists P0720 with P1574 among speed sensor codes in NTB14019, and owners report both together.

  • P0500Vehicle speed sensor signal missing or not believable

    Shares causes Supported by vehicle data

    Nissan lists P0500 with P1574 among speed sensor codes in NTB14019.

All Transmission codes

P1574 questions

Is P1574 only a cruise control problem?

It is named for the cruise control speed signal, but owners report it with P0720 and a car that hesitated or would not accelerate, so check the speed sensors.

Sources and review

  1. Nissan NTB14019: MIL with P2765, P0500, P1574, P1715 or P0720 and moisture on secondary speed sensor pins (2014 Rogue) — Nissan (filed with NHTSA)
  2. NHTSA complaint ODI 11613558: 2015 Infiniti Q50, P0500 P0720 P1574 — NHTSA Office of Defects Investigation (consumer complaint)
  3. NHTSA complaint ODI 10561585: 2014 Nissan Versa Note, P0500 P1574 P1715 P1720 P0720 — NHTSA Office of Defects Investigation (consumer complaint)
  4. NHTSA complaint ODI 10426606: 2007 Nissan Altima, P1715 P1574 P0720 — NHTSA Office of Defects Investigation (consumer complaint)
  5. P1574: cruise control vehicle speed sensor circuit fault — TAT scandata (tat.net.au)
Last reviewed
Written by
Saurabh K.
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