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ABS and Traction Control lights on my 2016 Chrysler 300

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Mike T. · rep 0 · May 25, 4:23 AM · 1 replies · solved · Question

Vehicle: 2016 Chrysler 300 Limited

Hi all,

I'm having an issue with my 2016 Chrysler 300 Limited. The ABS and Traction Control warning lights have both illuminated on my dashboard. They came on simultaneously a few days ago and haven't gone off since. I haven't noticed any immediate changes in braking performance, but I'm concerned about driving without these safety features.

I tried turning the car off and on, but the lights persist. Has anyone experienced this with their 300? Could it be a simple sensor issue, or something more serious? Any advice on what to check first or common OBD codes associated with this problem would be greatly appreciated.

Thanks!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:23 AM

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ClearTheCode admin answer:

When both the ABS and Traction Control lights illuminate on your 2016 Chrysler 300, it almost always points to an issue within the anti-lock braking system (ABS) or related sensors. These systems are interconnected, so a fault in one often triggers warnings for both.

Here's what's likely happening and what to do:

  1. Wheel Speed Sensors: The most common cause for these lights is a faulty wheel speed sensor. Each wheel has one, and they monitor wheel rotation speed. If one fails, the ABS module can't accurately determine individual wheel speeds, disabling both ABS and traction control. Common OBD codes include C0031 (Left Front Wheel Speed Sensor), C0034 (Right Front Wheel Speed Sensor), C0037 (Left Rear Wheel Speed Sensor), or C003A (Right Rear Wheel Speed Sensor).
  2. ABS Module Failure: Less common but possible, the ABS control module itself could be failing. This is a more expensive repair.
  3. Wiring Issues: Damaged wiring or a loose connection to a wheel speed sensor can also trigger these lights.
  4. Brake Fluid Level: While less likely to trigger both lights simultaneously without other warnings, a very low brake fluid level can sometimes cause issues.

When to see a shop:

  • Immediate Scan: The first step is to get the vehicle scanned for diagnostic trouble codes (DTCs) using an OBD-II scanner. Many auto parts stores offer this service for free. The specific C-codes (Chassis codes) will pinpoint the exact sensor or system at fault.
  • Safety Concern: While your regular brakes may still function, you've lost the benefits of ABS (preventing wheel lock-up during hard braking) and Traction Control (preventing wheel spin during acceleration). This significantly impacts safety, especially in adverse weather conditions. Do not delay getting this checked.
  • Professional Diagnosis: A professional technician can not only read the codes but also perform live data monitoring to see if a wheel speed sensor is intermittently failing or if there's a wiring issue. They can replace the faulty sensor or module and ensure the system is functioning correctly after repair.
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