2015 Ram 1500 Coolant Bypass Valve Recall

In February 2015, Ram 1500 trucks were recalled for a problem with the coolant bypass valve. The recall affects about 1.2 million trucks from the 2014 and 2015 model years. Ram is aware of three crashes and four injuries that are possibly related to this issue.

If you own a Ram 1500 truck from either of these model years, it’s important to be aware of this recall and take action if your truck is affected.

If you own a 2015 Ram 1500, you may want to keep an eye out for a recall on the coolant bypass valve. According to Ram, there is a possibility that the valve could fail and cause the engine to overheat. If this happens, it could lead to serious engine damage.

If you think your vehicle may be affected, be sure to take it to a dealer as soon as possible for inspection and repairs.

2015 Ram truck 3 way coolant valve removal and replacement

What Does a Coolant Bypass Valve Do?

A coolant bypass valve is a device that allows coolant to bypass the radiator when the engine is cold. This prevents the engine from overheating while it warms up.

How Do You Test a Coolant Bypass Valve?

When testing a coolant bypass valve, the first thing you need to do is locate the valve itself. The valve is usually located near the thermostat housing or water pump. Once you’ve found the valve, remove any covers or plugs that may be blocking access to it.

Once you have access to the valve, take a look at it to see if there are any visual cues that something may be wrong with it. If everything looks okay, proceed to the next step. The next step is to use a multimeter to test the continuity of the bypass valve.

To do this, simply attach one lead of the multimeter to one terminal of the bypass valve and touch the other lead of the multimeter to the other terminal. If there is continuity, then the bypass valve is working properly. If there is no continuity, then there may be an issue with either the bypass valve itself or with its connection to power.

What Code is P26Ab?

P26AB is a code for a Powertrain control module (PCM) internal processor error. This can be caused by a number of things, including a faulty PCM, an electrical issue, or a software issue. If you’re getting this code, it’s important to get your car to a mechanic as soon as possible so they can diagnose the problem and get it fixed.

What Does a Heater Control Valve Do?

A heater control valve is a device that regulates the flow of hot water to a car’s heater core. The valve is usually located on the engine side of the firewall, near the firewall itself. The purpose of the valve is to regulate how much hot water flows through the heater core.

By controlling the amount of hot water that flows through the heater core, the temperature in the cabin can be controlled. The heater control valve has two positions: “on” and “off.” When the valve is in the “on” position, hot water will flow from the engine to the heater core.

When the valve is in the “off” position, no hot water will flow to the heater core. There are also valves that have a third position: “recirculate.”

2015 Ram 1500 Coolant Bypass Valve Recall

Credit: www.amazon.com

2014 Ram 1500 Coolant Bypass Valve

When the 2014 Ram 1500 equipped with a 3.6L engine is placed in four-wheel drive, the cooling system works a little differently than it does in two-wheel drive. In four-wheel drive, the truck uses a coolant bypass valve to ensure that the front and rear differentials are properly cooled. This setup helps to prevent overheating, especially when the vehicle is being driven in off-road conditions or in stop-and-go traffic.

The way it works is that when the engine is running and the truck is stationary, coolant flows through the bypass valve and into the front and rear differentials. This keeps those components from overheating while the vehicle is not moving. However, when the truck starts moving again, the bypass valve closes and coolant flow returns to normal, ensuring that all of the engine’s components are properly cooled.

If you’re driving your Ram 1500 in four-wheel drive mode, keep an eye on your temperature gauge; if it starts to climb into the hot range, pull over and let your truck cool down before continuing on your way. And be sure to check your differential fluids regularly; they may need to be changed more often than usual if you’re doing a lot of driving in four-wheel drive mode.

Engine Coolant Bypass Valve Stuck Ram 1500

If you own a Ram 1500, you may have experienced an issue with your engine coolant bypass valve sticking. This can cause your engine to overheat, and in some cases, lead to engine damage. If you think you may have this problem, it’s important to get it checked out by a mechanic as soon as possible.

The engine coolant bypass valve is located on the back of the engine, near the radiator. It is responsible for regulating the flow of coolant through the radiator and preventing it from overheating. When the valve sticks, it can cause the coolant to build up in the radiator and overheat the engine.

There are a few signs that you may be experiencing this problem: -Your check engine light is on -Your temperature gauge is reading higher than normal

-You notice steam coming from under the hood If you’re experiencing any of these issues, it’s important to take your truck to a mechanic right away. They will be able to diagnose the problem and let you know if your engine coolant bypass valve is indeed stuck.

2015 Ram 1500 Ecodiesel Coolant Bypass Valve

When the 2015 Ram 1500 Ecodiesel was released, it came with a new feature called the Coolant Bypass Valve. This valve is designed to bypass the coolant system when the engine is turned off, allowing the engine to cool down faster. This can be beneficial for those who live in warmer climates or who frequently drive in stop-and-go traffic.

The Coolant Bypass Valve can also improve fuel economy by reducing engine warm-up time.


On February 6, 2015, Chrysler issued a recall for certain model year 2015 Ram 1500 trucks. The recall affects trucks equipped with the 3.0L EcoDiesel engine and an automatic transmission. Approximately 42,000 trucks are affected by the recall.

The recall is due to a problem with the coolant bypass valve. The valve may leak coolant, which can lead to engine overheating. Engine overheating can cause serious damage to the engine and may result in a fire.

Chrysler will notify owners of affected vehicles and dealers will replace the coolant bypass valve free of charge. Owners are advised to keep an eye on their coolant level and if they notice any leaking, they should contact their dealer as soon as possible.

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  • Zayn

    Zohn Zayn Smith is a seasoned automotive enthusiast with over 15 years of experience in the industry. As the Founder and Chief Editor of Truckguider, he specializes in Dodge Ram models, including the Ram 1500 and Ram 2500. His deep understanding of these trucks makes him a trusted authority on everything from performance and maintenance to towing capabilities.

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