Vehicle Speed Sensor Malfunction
Table of contents
P1540 SUBARU Possible Causes
- Faulty Vehicle Speed Sensor
- Vehicle Speed Sensor harness is open or shorted
- Vehicle Speed Sensor circuit poor electrical connection
How do I fix code P1540 SUBARU?
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 P1540 SUBARU code
The cost of diagnosing the P1540 SUBARU 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.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1540 SUBARU Description
The Vehicle Speed Sensor 1 (Output Shaft Rotation Sensor) is mounted to the extension case (from the outside of the case). the sensor outputs a pulse signal which is transmitted to the Transmission Control Module (TCM) where it is converted to vehicle speed.
The transfer clutch drum is connected directly to the rear wheel driving propeller shaft. Vehicle speed sensor 1 on the AWD model detects rear-wheel speed.