ASCD Vehicle Speed Sensor
Table of contents
P1574 INFINITI Possible Causes
- Harness or connectors of the Communication Area Network (CAN) communication line is open or shorted
- Combination meter circuit is open or shorted
- Faulty Combination meter
- Faulty Vehicle speed sensor
- Faulty Transmission Control Module
How do I fix code P1574 INFINITI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1574 INFINITI code
The cost of diagnosing the P1574 INFINITI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
ECM detects a difference between two vehicle speed signals is out of the specified range.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Automatic Speed Control Device (ASCD) (Cruise Control System) inoperative
P1574 INFINITI Description
The Engine Control Module (ECM) receives two vehicle speed sensor signals via Communication Area Network (CAN) communication line. One is sent from combination meter, and the other is from TCM (Transmission control module). The ECM uses these signals for Automatic Speed Control Module (ASCD) control.