The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

ABS and Traction Control Lights On - 2018 Pacifica Touring L

0

Mike T. · rep 0 · May 24, 3:25 PM · 1 replies · solved · Question

Vehicle: 2018 Chrysler Pacifica Touring L

Hey everyone,

I'm having a persistent issue with my 2018 Chrysler Pacifica Touring L. Recently, both the ABS warning light and the Traction Control light have come on simultaneously on my dashboard. It's been happening intermittently for about a week now, but today they're staying on constantly.

Sometimes, when I'm braking at low speeds, I feel a slight grinding sensation, almost like the ABS is engaging unnecessarily. I've checked the brake fluid level, and it seems fine. The brakes themselves feel okay otherwise, no major loss of stopping power.

Has anyone else experienced this with their Pacifica? I'm trying to figure out if this is something simple I can check myself or if it's definitely a trip to the mechanic. Any advice on potential causes or what to look for would be greatly appreciated. Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 24, 3:25 PM

0

ClearTheCode admin answer:

When your ABS and Traction Control lights illuminate together on your 2018 Chrysler Pacifica, it typically indicates an issue within the anti-lock braking system or the electronic stability control system, which often share components. The grinding sensation you're feeling at low speeds could be related to the system misinterpreting wheel speed data.

Here are the common causes and steps you can take:

  1. Wheel Speed Sensors (ABS Sensors): These are the most common culprits. Each wheel has a sensor that monitors its rotational speed. If a sensor is dirty, damaged, or has a faulty wiring connection, it can send incorrect signals to the ABS module, triggering the lights and potentially causing the system to activate incorrectly. A common diagnostic trouble code (DTC) for this issue is C0031 (Left Front Wheel Speed Sensor Circuit), C0034 (Right Front), C0037 (Left Rear), or C003A (Right Rear).
  2. Faulty ABS Module: Less common, but the ABS control module itself can fail. This module processes data from the wheel speed sensors and controls the ABS pump and valves. A module failure can cause various warning lights and system malfunctions.
  3. Low Brake Fluid or Air in the System: While you mentioned checking the fluid, ensure it's at the correct level and that there's no air in the lines, which can sometimes affect sensor readings or pressure within the system.
  4. Wiring Issues: Damaged wiring or corroded connectors leading to the wheel speed sensors or the ABS module can interrupt signals.

When to see a shop:

  • Immediate Action: If you experience any significant change in braking performance, such as a spongy pedal, reduced stopping power, or the vehicle pulling to one side, do not drive the vehicle and have it towed to a reputable repair shop immediately.
  • Diagnostic Scan: The most effective first step is to have an automotive scan tool connected to your Pacifica's OBD-II port. This will retrieve any stored diagnostic trouble codes (DTCs) from the ABS module, which will pinpoint the exact sensor or circuit that is malfunctioning. Many auto parts stores offer free code reading services.
  • Professional Inspection: Given the grinding sensation, it's highly recommended to have a professional technician inspect the wheel speed sensors, their wiring, and potentially the brake system components. They can accurately diagnose the issue and perform any necessary repairs, such as cleaning or replacing a faulty sensor, or addressing more complex ABS module problems.
Menu

Help & account