AutoCodes – Acura – P0502 Acura

P0502 Acura Code - CVT Speed Sensor Circuit Open/Short

Quick Answer

The Continuously Variable Transmission (CVT) Speed Sensor is attached to the outside of the torque converter housing. Common causes include Faulty Continuously Variable Transmission (CVT) Speed Sensor, CVT Speed Sensor harness or connectors is open or shorted, CVT Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0502 Acura indicates CVT Speed Sensor Circuit Open/Short.
Common causes: Common causes include Faulty Continuously Variable Transmission (CVT) Speed Sensor, CVT Speed Sensor harness or connectors is open or shorted, CVT Speed Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 382

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Dec 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0502 Acura Description

The Continuously Variable Transmission (CVT) Speed Sensor is attached to the outside of the torque converter housing. The CVT Speed Sensor detects the number of revolutions of the secondary driven gear and sends a pulsing signal to the Powertrain Control Module (PCM). The PCM converts the pulsing signal into vehicle speed. If no pulses occur with the secondary driven gear rotating, the PCM detects a malfunction that may be caused by an open, an intermittent open, or a short to ground. If no signal from the Speed Sensor is received for a set time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0502 Acura - CVT Speed Sensor Circuit Open/Short - AutoCodes.com — P0502 Acura Code - CVT Speed Sensor Circuit Open/Short

What does this mean?

What are the Possible Causes of the DTC P0502 Acura?

Faulty Continuously Variable Transmission (CVT) Speed Sensor
CVT Speed Sensor harness or connectors is open or shorted
CVT Speed Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0502 Acura?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0502 Acura code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.