Mazda CX-5 Turbo Issues – What Problems Will You Encounter?

If you're in the market for one of the best compact SUVs of our time, it's almost hard to go wrong with the Mazda CX-5 with the turbocharged inline-four engine. Since its introduction, its maker has always come up with ways to improve the auto in each succeeding model year. With that, it has made it up to the second-generation series that we have now.

One of the best decisions that Mazda made with the CX-5 is the adoption of a turbocharger in its powertrain. Elsewhere, the crossover already has a trim with a turbocharged diesel engine in its first-generation models, but it wasn't until 2019 when it finally got the intercooled engines with turbochargers in its gasoline- and diesel-fed series sold in the US.

With all the hype running around about the auto on review sites and reports, we are here to find out the most common problems centering on its turbo to help owners and new buyers alike in getting themselves more acquainted with the vehicle.

Most Common Symptoms of Mazda CX-5 Turbocharger Issues

When it comes to reliability and quality, the CX-5 has rated high on its second-generation series. No other than one of the world's top data and analytics firms, JD Power, has given it a "Great" rating with 81 out of 100 score in the said categories combined, and it's definitely hard to dispute that given the consumer watchdog's long-time credibility in this matter.

Just like any other product though, the turbocharged engine of the CX-5 is in no way perfect. One way or another, it is bound to give in to the rigors of time coupled with abuse or neglect from its users. With that, if you are noticing the following red flags in your Mazda, then, you are likely looking at a turbo problem with it:

1. Loss of Power

If you notice a loss of power, it may be due to the turbo not spinning fast enough. This can cause the engine to run slower and make it difficult to accelerate. It can also force your engine to stall in a more serious scenario.

2. Strange Noises from the Engine Bay

Strange noises coming from the engine may be due to the turbocharger or bearings being damaged. These sounds may be similar to a hissing or whistling noise.

3. Reduced Fuel Efficiency

Increased fuel consumption can be caused by the turbocharger working harder than usual to generate boost. This can lead to more fuel being used than normal.

4. Poor Emissions

Black smoke coming from the exhaust can be caused by the turbocharger overworking and burning oil. This can cause a build-up of soot in the exhaust system, which can eventually lead to clogging.

5. Fault Codes

The most common fault code related to a bad turbo is p2262. It means that the engine is not detecting any boost pressure from the turbocharger or supercharger. This could be due to a number of problems, such as a leak in the system, a faulty sensor, or a blocked exhaust. This error message can also come in different variations, too, depending on the nature and severity of the issue.

If you experience any of these signs, it's important to have the vehicle inspected by a qualified technician as soon as possible. Left unchecked, the negative effects of a bad turbocharger can spread like a wildfire to the other parts of the engine.

Most Common Causes and Solutions to the Turbocharger Problems of the Mazda CX-5

There are only a few reported issues linked to the turbocharger of the CX-5. These are further trimmed down in the second-generation models of the crossover due to the design and performance overhauls provided by Mazda.

A study of recall advisories, customer reviews, forums, and reports concerning the car allowed us to uncover the most common areas where most problems will likely occur though. These include the following:

1. Fuel Pump Failure

In November 2021, Mazda notified customers about the recall of several of its vehicles produced between 2019 and 2020, which included the CX-5. This was due to the tendency of the impeller located within the low-pressure pump to fail due to cracking and deformation. Now, this may not be a part of the turbo itself but it is crucial to its operation.

A faulty fuel pump can affect the turbocharger of the Mazda CX-5 in several ways. First, it can cause the engine to run lean, which can damage the turbocharger. Second, it can cause the engine to misfire, which can also put more stress on the turbocharger. Finally, it can cause the engine to overheat, which can lead to engine failure and damage to the various parts connected to it like the turbocharger.

If your unit is still covered by warranty, be sure to take advantage of the opportunity to have the issue fixed for free by Mazda. According to the recall advisory, the repair involves replacing the whole fuel pump assembly.

For some reason, if your vehicle is no longer covered by warranty or it's not part of the recall, this can be diagnosed by a qualified mechanic. The likely solutions for each problem will vary depending on the cause. If it's just dirty due to carbon build-up you may get away from this by having the pumps cleaned. However, in most cases, replacing the fuel pump will fix the problem.

2. PCM Error

In June 2019, Mazda issued another recall for a possible software error in the powertrain control module (PCM). This electrical problem can mean a lot of things to the different components of your auto.

Among its several functions, the PCM is responsible for managing the engine's ignition timing and fuel delivery. When it malfunctions, it can cause the turbocharger to overspin or underperform.

There are several ways to diagnose a PCM error. The first is to check the vehicle's diagnostic codes. If the codes indicate an issue with the PCM, then it's likely that's the source of the problem.

Another way to diagnose a PCM error is to examine the engine's performance. If the engine is running rough or lacking power with no other possible issues with the engine itself, it's a sign that the PCM is not functioning correctly. Moreover, if the turbocharger seems to be checking okay despite the fault code, the issue could be isolated to the PCM.

There are a few possible solutions for a PCM error. The first is to have your mechanic flash or reset the PCM. The latter can be done by disconnecting the battery for a few minutes. If that doesn't work, then the wiring and sensors of the crossover will have to be checked first before ruling out whether or not the PCM already needs to be replaced.

3. Carbon Build-Up

Carbon build-up is fairly a common issue with vehicles as they age or as they accumulate a significant amount of mileage. With that, older units of the Mazda CX-5 can be prone to this, which can cause a number of problems for the vehicle.

Carbon build-up can make the turbocharger work less efficiently due to lubrication issues or increased friction among its moving components. Eventually, this can lead to overheating or complete failure of the turbocharger.

The worst-case scenario can be a very costly repair and is often not covered by a warranty. There are a few things that can be done to prevent or reduce carbon build-up in the turbocharger, and these should be considered if you own a Mazda CX-5.

One solution is to use a higher-quality oil. This will help prevent carbon build-up, and will also extend the life of your turbocharger. If the problem is only due to insufficient oil, just refilling the oil reservoir with the recommended fluid might work. On the other hand, if it's dirty oil causing the issue, your ride may be needing an oil change or flushing.

Another solution is to have your turbocharger serviced to remove any carbon that has already built up through the process of decarbonization and to also prevent further accumulation of contaminants. If you are experiencing issues with your turbocharger, it is important to take action immediately to prevent further damage.

Carbon build-up is a common issue with Mazda CX-5s, but it can be prevented or reduced with the proper maintenance and care.

Can You Still Drive with a Damaged Turbocharger?

It is still possible to drive your Mazda CX-5 even if its turbocharger is not functioning properly. However, that's definitely not advisable because forcing the car to run with a problematic turbo can lead to long-term damage.

The turbocharger is responsible for boosting the engine's power and efficiency. When it is not working correctly, the engine will have to work harder to produce the same amount of power. Pushing your luck can cause increased wear and tear on the engine components, leading to expensive repairs down the road. It is best to have the problem diagnosed and fixed as soon as possible to avoid further damage.

Conclusion

The Mazda CX-5 is a great bang for the dollar vehicle. However, it may be subjected to some issues along the way, especially as it accumulates major mileage. No matter how big or small the problem is, it is not something worth risking your car for. Have it checked immediately to prevent your troubles from going out of the line.