Oceanside Auto Repair

Why does my Jaguar say restricted performance?

Why does my Jaguar say restricted performance?

When your Jaguar says, “restricted performance”, what does it mean? Well, when this message appears, this just means that your car’s engine management system has gone into “limp” mode to protect your car’s systems and components. But what exactly caused this?

Here are a few reasons as to why your Jaguar has restricted performance:

  • You might have a faulty catalytic converter.

A catalytic converter helps in the filtering out of harmful byproducts in the gasses of your exhaust. The catalytic converter burns these byproducts in order to minimize the toxic fumes. A faulty catalytic converter in your Jaguar can also mean that it may be clogged. 

  • You have a defective fuel system.

Your Jaguar’s fuel line might have a clog in it, or your pump is faulty. This can cause inadequate delivery of gas to your engine and therefore causing it to overheat and turn off while on the road. It’s important to deal with this ASAP if this is the reason why your Jaguar says, “restricted performance”.

  • Your Jaguar has mass airflow problems.

When you have air intake problems, such as air flow leaks, mass airflow issues, intercooler tubing, or throttle body housing, this may cause your engine to stall shortly after starting, or you find it very hard to start your car. With this, you might want to get this checked by your mechanic.

With all of this, the first thing you should always do is to have a routine check-up every month or so in order to see if things are all in check with your Jaguar. 

For over 12 years, Oceanside Motorsports has been an Oceanside staple helping you get back on the road faster than the dealer can. We have continuously trained technicians and offer a lifetime warranty on most repairs. With our Time Saver Service, we can get your car and deliver it to your doorstep once fixed. We can even help arrange to tow if needed. You can also have our free loaner car while your car is serviced! You'll get used to expecting quick, simple, and dependable auto repairs from Oceanside Motorsports!


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343 Airport Rd. Oceanside, CA 92058 (760) 721-5500