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2022 Pilot Touring - ABS and VSA Lights On, DTC P0500

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Mike T. · rep 0 · May 25, 1:48 AM · 1 replies · solved · Question

Vehicle: 2022 Honda Pilot Touring

My 2022 Honda Pilot Touring suddenly had the ABS warning light and the VSA (Vehicle Stability Assist) light come on simultaneously. I scanned it with my OBD-II reader, and it pulled up a P0500 code, which points to a Vehicle Speed Sensor malfunction.

The car seems to drive fine, but I'm concerned about safety systems being disabled. What's the most likely cause for this on a relatively new vehicle? Is it something I can check myself?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:48 AM

0

ClearTheCode admin answer:

The simultaneous illumination of the ABS and VSA lights, along with a P0500 diagnostic trouble code (DTC) on your 2022 Honda Pilot Touring, strongly indicates an issue with one of the wheel speed sensors or its circuit. The P0500 code specifically refers to a 'Vehicle Speed Sensor Malfunction.'

Understanding the Issue:

  • The ABS (Anti-lock Braking System) and VSA systems rely heavily on accurate wheel speed data. If a sensor fails or provides inconsistent readings, these safety systems will deactivate and trigger warning lights.
  • A P0500 code often points to a general vehicle speed sensor issue, which in modern vehicles usually means one of the four wheel speed sensors.

Common Causes for P0500 on a New Vehicle:

  1. Faulty Wheel Speed Sensor: Even on newer vehicles, a sensor can fail prematurely. This is the most common cause.
  2. Damaged Wiring/Connector: The wiring harness leading to a wheel speed sensor can get damaged (e.g., from road debris, rodent chew, or improper installation during other work) or the connector might be loose or corroded.
  3. Tone Ring/ABS Ring Damage: The tone ring (or ABS ring) is a toothed wheel that the sensor reads. If it's cracked, bent, or obstructed by debris, the sensor won't get an accurate reading. This is less common on a new vehicle unless there was recent brake work or an impact.
  4. Module Glitch (Less Common): Rarely, the ABS control module itself might have a temporary glitch.

What to Check/Do (If Comfortable):

  • Visual Inspection: Safely lift the vehicle and inspect the wheel speed sensors (located near each wheel hub) and their wiring. Look for obvious damage, cuts, or loose connections. Check for debris around the tone rings.
  • Check Connectors: Disconnect and reconnect the wheel speed sensor connectors to ensure a good connection.

When to See a Shop: Given that this affects critical safety systems like ABS and VSA, it's highly recommended to have your Pilot professionally diagnosed and repaired as soon as possible. While the car may drive normally, you've lost the functionality of these systems, which are crucial for emergency braking and stability control. A professional can use advanced diagnostic tools to pinpoint exactly which sensor or circuit is at fault, often by monitoring live data from each wheel speed sensor.

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