Engine Coolant Temperature Sensor Guide for the 2017-2024 Jeep Compass
Experiencing overheating, poor fuel economy, or a check engine light? Your coolant sensor could be the problem.
- A faulty ECT sensor can cause symptoms ranging from bad gas mileage to engine stalling.
- Owners of 2019-2020 models should be aware of a documented issue where a sensor fault can cause a sudden engine shutdown.
- Check for coolant leaks around the sensor, as a TSB indicates the sensor's lock ring can fail.
- For best results, use an OEM Mopar sensor or a premium aftermarket brand like Delphi or Standard Ignition; avoid unbranded parts.
Is Your Jeep Compass Overheating or Stalling?
A faulty Engine Coolant Temperature (ECT) sensor can cause a range of problems in the 2017-2024 Jeep Compass. While it's a simple part, it plays a big role in how your engine runs. Ignoring the symptoms can lead to poor performance, bad fuel mileage, and in some cases, engine stalling.
Known Issue: Sudden Engine Shutdown (2019-2020 Models)
The National Highway Traffic Safety Administration (NHTSA) investigated reports of 2019-2020 Jeep Compass SUVs displaying a "High Coolant Temperature" warning message immediately followed by a sudden engine shutdown. The investigation found a low failure rate and noted that the vehicles could usually be restarted right away. As a result, no official recall was issued, but owners of these model years should be aware of this potential issue.
Common Symptoms of a Bad Coolant Sensor
- Check Engine Light: This is often the first sign. The sensor may trigger codes like P0116, P0117, P0118, or P0119. 🎬 Watch: How to diagnose and fix these specific sensor codes.
- Inaccurate Temperature Gauge: The gauge on your dashboard might shoot up to hot, stay on cold, or fluctuate randomly.
- Engine Overheating: If the sensor fails to report a high temperature, the cooling fans may not turn on when needed.
- Poor Fuel Economy: A bad sensor can get stuck sending a "cold" signal, causing the engine computer to inject too much fuel.
- Black Smoke from Exhaust: This is a direct result of too much fuel being burned in the exhaust instead of the engine.
- Rough Idle and Hard Starting: The engine may run poorly or be difficult to start, especially when cold, due to the incorrect fuel mixture.
Choosing the Right Aftermarket Sensor
When it comes to electronic sensors, quality matters. While an OEM Mopar part offers the best guarantee of compatibility, several aftermarket brands provide a good balance of price and performance. Forum discussions among Jeep owners often suggest that for critical sensors, sticking with the original manufacturer (OEM) or the company that makes the part for them (like NTK) is the safest bet.
- Premium Aftermarket (Good Bet): Brands like Delphi, Standard Ignition (SMP), and Beck Arnley are generally well-regarded. They often have a strong reputation for quality control and are sometimes original equipment suppliers for other car manufacturers.
- Standard Aftermarket (Use with Caution): Brands like Dorman and Four Seasons offer cost-effective solutions. Dorman is known for creating parts that address common OEM failures. However, some mechanics and owners report a shorter lifespan with some budget-friendly sensors compared to OEM or premium aftermarket options.
- OEM (Original Equipment): Mopar is the official parts brand for Jeep. This is the most reliable, albeit most expensive, option. A specific TSB for a coolant leak issue on these vehicles specifies Mopar part number 68217702AD.
Check for Technical Service Bulletins (TSBs)
Jeep has released a TSB (reference RSU 23-134) for an issue where the ECT sensor's locking ring can break, causing a coolant leak. The fix is to inspect and replace the sensor if it rotates in its housing. Additionally, a TSB for 2023 models with the 2.0L Turbo engine points to an incorrect coolant mixture from the factory causing overheating symptoms. Always check if a TSB applies to your vehicle before assuming a part has failed.
Cost to Replace a Jeep Compass Coolant Sensor
| Part Source | Estimated Part Cost |
|---|---|
| New Aftermarket | $18 - $75 |
| New OEM (Mopar) | $45 - $90 |
| Shop Labor | $100 - $200 |
Note: Costs are estimates and can vary by location and supplier. The aftermarket price range is wide, but most reputable brands fall under $75.
Frequently Asked Questions
Where is the coolant sensor on a 2017-2024 Jeep Compass?
For models with the 2.4L Tigershark engine, the engine coolant temperature sensor is located on the thermostat housing, which is on the right side (passenger side) of the engine.
🎬 See this walkthrough for locating and replacing the 2.4L sensor.Can I replace the coolant temperature sensor myself?
Yes, this is a DIY-friendly job for someone with basic tools. The job involves partially draining the coolant, 🎬 Watch: Step-by-step guide on how to properly drain and replace coolant. disconnecting the electrical connector, unscrewing the old sensor, and installing the new one. It's important to do this on a cold engine to avoid burns. The job typically takes less than an hour.
What happens if I don't replace a bad coolant sensor?
Continuing to drive with a faulty sensor can lead to persistent poor fuel economy, engine hesitation, and potential overheating, which could cause serious engine damage. In 2019-2020 models, it could also lead to the vehicle shutting down while driving.
Is there a recall for the Jeep Compass coolant sensor?
No, there is no active recall for the sensor itself. However, NHTSA did investigate engine stalling related to coolant temperature warnings in 2019-2020 models, but the investigation was closed without a recall. There are Technical Service Bulletins (TSBs) related to the sensor leaking and incorrect coolant causing overheating symptoms.
Helpful Videos
Technical Specifications
OEM Part Numbers: 68217702AD 5149077AB
Located on the thermostat housing for the 2.4L engine. It is a thermistor-type sensor that changes resistance based on coolant temperature.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Jeep Compass:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Jeep Compass Overheating or Stalling?
- Known Issue: Sudden Engine Shutdown (2019-2020 Models)
- Common Symptoms of a Bad Coolant Sensor
- Choosing the Right Aftermarket Sensor
- Check for Technical Service Bulletins (TSBs)
- Cost to Replace a Jeep Compass Coolant Sensor
- Frequently Asked Questions
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