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2017 Outlander Sport GT TPMS Light Constantly On

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Mike T. · rep 0 · May 22, 5:34 AM · 1 replies · solved · Question

Vehicle: 2017 Mitsubishi Outlander Sport GT

Hey everyone,

I've got a persistent issue with my 2017 Mitsubishi Outlander Sport GT. The TPMS (Tire Pressure Monitoring System) light on the dash has been on for weeks now, and I can't get it to turn off. I've checked all four tire pressures multiple times with a reliable gauge, and they are all perfectly at the recommended PSI.

I've tried driving for extended periods, inflating/deflating the tires slightly, and even disconnecting the battery for a few minutes, but the light just stays on. It's really annoying to see it constantly illuminated.

Could this be a faulty sensor in one of the tires, or perhaps an issue with the TPMS receiver module? Has anyone else with a 2017 Outlander Sport experienced this, and what was the fix?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:34 AM

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ClearTheCode admin answer:

A constantly illuminated TPMS light, even with correct tire pressures, almost always indicates a fault within the TPMS system itself on your 2017 Outlander Sport GT. Here are the most common causes:

  1. Failing TPMS Sensor Battery: Each TPMS sensor inside the tire has a small, non-replaceable battery. These batteries typically last 5-10 years. Given your vehicle's age, it's highly probable that one or more sensor batteries are dying or dead. When a battery dies, the sensor stops transmitting, and the system flags an error.
  2. Damaged TPMS Sensor: A sensor could have been damaged during tire mounting, by road debris, or simply failed internally.
  3. TPMS Receiver Module Issue: Less common, but the central receiver module that collects data from the sensors could be faulty, or its wiring could be compromised.
  4. Sensor Not Programmed/Learned: If a tire or sensor was recently replaced, the new sensor might not have been properly programmed or 'learned' by the vehicle's TPMS system.

Diagnostics & OBD Codes: When a TPMS fault occurs, it will trigger specific diagnostic trouble codes (DTCs), usually in the 'C' (Chassis) category, such as C1201, C1202, etc., which often indicate which specific sensor is not communicating or has a low battery. A specialized TPMS scan tool (different from a generic OBD-II scanner) is required to read these codes directly from the TPMS system and to check the battery status of each sensor.

When to See a Shop: It's recommended to take your Outlander Sport to a tire shop or a Mitsubishi dealership that has the proper TPMS diagnostic tools. They can:

  1. Scan each individual sensor to check its battery life and signal strength.
  2. Identify which specific sensor (or sensors) is faulty.
  3. Replace the faulty sensor(s) and properly program them to your vehicle.
  4. Perform a TPMS system reset. While not an immediate safety hazard if your pressures are manually checked, a non-functional TPMS system means you won't be alerted to future pressure drops, which can impact safety and tire longevity.
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