Ram 1500 Engine Oil Temperature Sensor Guide for 2014-2023 Models
Understand the symptoms of a failing oil temp sensor in your Ram 1500 and how to choose the right replacement part.
- A bad oil temp sensor will almost always trigger a Check Engine Light with codes like P0196, P0197, or P0198.
- For the 5.7L HEMI, the sensor is easy to replace; it's located near the oil filter. For the 3.6L V6, it's a much harder job requiring intake manifold removal.
- Always check the wiring and connector for damage before buying a new sensor, as this is a common point of failure.
- Quality aftermarket brands like Standard Ignition and Walker Products offer a reliable alternative to more expensive OEM parts for this component.
Is Your Ram 1500 Showing Signs of a Bad Oil Temp Sensor?
A failing engine oil temperature sensor can cause confusing problems that might seem unrelated at first. Because the truck's computer relies on this sensor for accurate data, a bad signal can lead to poor performance, incorrect gauge readings, and check engine lights. Ignoring these symptoms can lead to bigger headaches down the road.
Common Failure Symptoms
- Check Engine Light: This is the most common sign. You'll likely see codes such as P0196, P0197, or P0198.
- Erratic Temperature Gauge: The oil temperature gauge on your dashboard may jump around, read extremely high right after starting, or not move at all.
- Poor Engine Performance: You might experience rough idling, a loss of power, or even have the engine enter a protective "limp mode" where RPMs are limited.
- Warning Messages: Your truck's information center might display a message like "Oil Temperature High" even when the engine is cold.
Engine Location Varies
The location of the oil temperature sensor depends on your engine. On the 5.7L HEMI, it is typically located on the side of the oil filter housing, near the alternator. 🎬 Watch this 5.7L HEMI sensor removal and replacement guide. On the 3.6L Pentastar, the sensor is part of the oil filter/cooler housing assembly located under the intake manifold, 🎬 See how to access the sensor on 3.6L Pentastar engines. making it much more difficult to access. Always verify the location for your specific engine before starting work.
Choosing the Right Aftermarket Sensor
When your oil temperature sensor fails, you have a choice between an original equipment (OEM) part from Mopar and several aftermarket brands. For a simple sensor like this, a quality aftermarket part can offer significant savings without sacrificing reliability.
Aftermarket Brand Tiers
- Premium Aftermarket (Standard Ignition, Walker Products): These brands are well-regarded in the industry and often produce parts that meet or exceed OEM specifications. They focus on quality materials and testing, making them a reliable choice for this critical sensor.
- Standard Aftermarket (Holstein, Global Parts): These brands provide a cost-effective solution that gets the job done. While they are a good value, they may not have the same level of extensive testing or brand recognition as the premium options. They are a solid choice for a budget-conscious repair.
Pro Tip: Check the Wiring First
Before you replace the sensor, take a close look at the wiring and connector. A corroded connector or a damaged wire can cause the same symptoms as a failed sensor. Cleaning the connector or repairing a wire is much cheaper than replacing the whole part.
Cost to Replace Ram 1500 Oil Temperature Sensor
| Part Type | Price Range |
|---|---|
| New OEM (Mopar) | $60 - $105 |
| New Aftermarket | $19.37 - $42.12 |
| Shop Labor | $100 - $450+ |
Note: Labor costs vary significantly based on engine type. The 5.7L HEMI is on the lower end, while the 3.6L Pentastar is much higher due to the need to remove the intake manifold.
Frequently Asked Questions
Is there a recall on the Ram 1500 oil temperature sensor?
There are no specific recalls for the engine oil temperature sensor on the 2014-2023 Ram 1500. However, a Technical Service Bulletin (TSB 09-005-21) was issued for some 2021 Ram 1500 models with the 6.2L engine for an oil leak from the sensor, requiring it to be re-torqued. Always check for recalls and TSBs related to your specific vehicle's VIN.
Can I replace the oil temperature sensor myself?
For owners with the 5.7L HEMI engine, this is a very DIY-friendly job. The sensor is accessible from underneath the truck after removing the oil filter. For the 3.6L Pentastar engine, replacement is much more involved and may be best left to a professional mechanic, as it requires removing the upper and lower intake manifolds.
Do I need to change my oil when replacing the sensor?
On the 5.7L HEMI, the sensor is located near the oil filter. You will lose some oil when you remove it, so it's a good idea to perform the replacement during a regular oil change. If you're not due for an oil change, be prepared to top off the oil level after the replacement.
What does a reading of -40° mean?
If your scan tool or dashboard shows an oil temperature of -40°, this is a default reading that the PCM uses when it receives no signal or an irrational signal from the sensor. It's a strong indicator of an open circuit, which could be a bad sensor, a disconnected plug, or a broken wire.
🎬 Learn how to test and replace sensors for P0197 codes.Helpful Videos
Technical Specifications
OEM Part Numbers: 5149077AB 68315274AA
The sensor is a thermistor, which means its electrical resistance changes based on the temperature of the engine oil. This change in resistance is converted into a voltage signal that the PCM reads.
We Have This Part in Stock
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.
- Ram 1500:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Ram 1500 Showing Signs of a Bad Oil Temp Sensor?
- Common Failure Symptoms
- Engine Location Varies
- Choosing the Right Aftermarket Sensor
- Aftermarket Brand Tiers
- Pro Tip: Check the Wiring First
- Cost to Replace Ram 1500 Oil Temperature Sensor
- Frequently Asked Questions
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