Auto manufacturers equip cars with several car sensors and gauges. These system components have their respective jobs. However, these components are not independent.
For instance, the oil pressure sensor monitors the pressure of the motor oil being pushed to various internal engine parts and reports to the car computer, which then controls the oil pressure gauge on the instrument cluster.
In addition, warning lights illuminate on the dashboard to tell the driver of an imminent issue in the system that requires attention. While most drivers are familiar with only two gauges – speedometer and fuel gauge, several other gauges report vital information while driving.
So, if you see a ‘check gauge light’ warning message on the driver information center, you have an imminent problem somewhere around the system. Here, we will explain the ‘check gauge light’ meaning, causes, and how to rectify the error.
What Does A Check Gauge Light Mean?
The “Check Gauges” or “Check Gages” warning light is your vehicle’s way of getting your attention when something isn’t reading quite right.
It’s more of a friendly tap on the shoulder rather than a fire alarm. It’s sort of a, “Hey, take a look at your dashboard gauges because at least one of them is showing a reading that’s outside the normal operating range.”
This warning system was most commonly found in American-made vehicles, particularly Ford, Chevrolet, and Dodge models from the 1980s through the early 2000s.
Most newer vehicles have moved away from a general “Check Gauges” light in favor of more specific warnings like “Engine Overheat,” “Low Oil Pressure,” or “Battery,” so this catch-all approach is now mostly seen in older cars and trucks.
The light itself usually appears as text on your dashboard, either in the instrument cluster or sometimes as part of the driver information center. Instead of pointing at a specific system, the check gauges warning is letting you know that’s something’s wrong, but you’ll need to do some investigating.
While this might seem less helpful at first, the “Check Gauges” light actually provides a valuable prompt to quickly check all your vehicle’s critical systems, as some issues (like low oil pressure or overheating) require immediate attention.
What causes the check gauge light on?
The most common causes of a Check Gauge Light are bad engine ground, low battery voltage, or a faulty gauge sensor such as the coolant temperature sensor, oil pressure sensor, or tire pressure sensor. It can also be caused by low fluid levels.
Here is a more detailed list of the causes of a Check Gauges light.
#1. Bad Engine Ground.
The most common cause when it comes to the Check Gauges Light is poor ground between the engine and your car’s chassis.
Usually, there are one or more ground wires running between them, and if the ground point is corroded or rusty, it can lose the connection.
When the ground is bad, it will cause incorrect readings from the engine’s sensors, which will result in a check gauge.
#2. Coolant Temp Sensor or Engine Overheating.
There are several causes that can lead to an overheating engine, but all causes should also create the temperature warning light on the dashboard. With this could also come the Check Gauges Light.
The most common reason for this is a bad coolant temperature sensor that’s sending the wrong data to the engine control module and instrument cluster, but it can also be caused by coolant issues such as a bad thermostat or an overheating engine.
When the engine starts to overheat, you might have some warning. You could see the temperature gauge rising on the dashboard if your car has one. You might also smell something burning or see some leakage underneath your vehicle.
#3. Oil Pressure Sensor or Reduced Oil Pressure.
The engine requires a certain amount of oil pressure to ensure proper operation. If the oil pressure drops, the motor won’t have the lubrication it needs and the Check Engine Light could come on. You may also see an oil pressure warning light, along with the Check Gauges Light.
In most cases, the reduced oil pressure is caused by a bad oil pressure sensor or low oil. There could also be a defect with the oil filter. Furthermore, if you use the wrong oil or choose an inappropriate viscosity, problems are sure to arise.
#4. Faulty Fuel Level Sender.
Inside your car’s fuel tank is a fuel level sender that sends information about how much fuel is in the fuel tank.
If there is a problem with this transmitter unit or the wiring to the instrument cluster, it will send the wrong data, and a Check Gauges light will appear on your dashboard.
#5. Dead Battery/Blown Fuse.
There’s a battery warning light on your dashboard that indicates when there are charging problems. When this light comes on, there may also be a warning to check the gauges.
Even though this light shows a battery, it can mean a multitude of things. You may need to replace the battery, but it could also show you that there’s trouble with the alternator or electrical connections.
Additionally, a blown fuse can lead to many complications, some of which can appear confusing, depending on what system is affected. You can check the fuses to see what’s blown and replace it with a fuse that runs on the same amperage.
#6. Improper Tire Pressure.
With each tire, your modern vehicle has sensors to monitor the pressure. If the pressure gets too low or high, based on manufacturer specs, the warning light will come on. This can also cause the Check Gauges Light to illuminate.
Running a vehicle with the wrong amount of tire air pressure can be disastrous. You could blow out a tire or run it flat, both of which could cause a major accident. It can also be caused by a faulty tire pressure sensor.
#7. Ignored Maintenance.
For your car to run right, you must follow the recommended maintenance schedule. These schedules are put out by the manufacturer and show you what tasks should be performed at particular intervals.
Regular maintenance could include tire rotation, oil changes, spark plug replacement, air filter replacement and so much more.
If you choose to ignore the maintenance, the car will stop running right. Clogged filters and contaminated oil can cause any number of problems, including dashboard warning lights. To prevent this, you want to follow all recommendations.
#8. Defective Computer.
In your car, there could be several computers that keep everything running as it should. These computers read the information coming from the sensors and ensure that adjustments are made to match what’s happening.
While it doesn’t happen often, any one of these computers can malfunction. Whether it is the Powertrain Control Module (PCM) or the Electronic Control Unit (ECU), there’s always the chance that it needs an update or replacement. When this time comes, you should notice multiple issues occurring at once.
How do you fix check gauge light errors?
Once you’ve determined which gauge is showing problems, here are some common fixes for issues that trigger the check gauge light:
#1. Add Oil If Oil Pressure Gauge Shows Low Readings.
Low oil pressure is one of the most frequent triggers. If the oil pressure gauge is showing very low psi, add oil right away. Even a quart low can cause pressure issues. Top it off to keep the engine properly lubricated.
#2. Add Coolant If Temperature Gauge Shows Overheating.
Replenish coolant/anti-freeze to proper levels if you notice engine overheating issues. Adding coolant can help lower temperature and prevent overheating damage. Also have the cooling system inspected for leaks.
#3. Replace Faulty Sensors.
If a gauge sensor is malfunctioning or sending incorrect data, the sensor may just need to be replaced. Your mechanic can determine if an engine temperature sensor, oil pressure sensor, or other gauge sensors are causing erratic gauge readings.
#4. Fix Any Leaks.
Leaks in gaskets, hoses, seals, and housing can contribute to low fluid levels that affect gauges. Have your mechanic find any engine oil, coolant, transmission, brake fluid or power steering fluid leaks and repair them.
#5. Inspect Belts, Pulleys, Thermostat.
Faulty auxiliary belts, pulleys, water pump, or thermostat can lead to overheating issues that trigger the check gauge light. These should be examined and replaced if defective.
#6. Replace Defective Gauge.
If a dashboard gauge itself is giving false readings due to internal failure, the faulty gauge will need to be replaced. This restores accurate monitoring of that system.
#7. Address Any Engine Issues.
Serious engine problems like a blown head gasket can lead to overheating, oil burning, and low oil pressure. Have engine issues inspected and corrected to resolve any underlying problems triggering the warning light.
Common Mistakes People Make When Trying to Fixing Check Gauges Light
#1. Not Checking the Basics First.
One of the most common mistakes people make when trying to fix a check gauge light is not checking the basics first.
This includes ensuring that the battery is properly connected and that all fuses are in working order. If the problem is not with the battery or fuses, it is likely more serious and will require further diagnosis.
#2. Replacing Parts without Testing Them First.
Another common mistake is replacing parts without testing them first. For example, if the check gauges light is coming on because of a faulty sensor, replacing it without testing it first will not solve the problem.
It is important to test each part before replacing it to ensure that it is actually the cause of the problem.
#3. Not Keeping Track of What Was Done.
Another mistake that people make when trying to fix a check gauge light is not keeping track of what was done.
This can be easily done by keeping a log of all the steps that were taken to diagnose and repair the problem. This will come in handy if the problem persists and you need to take it to a mechanic or dealership for further diagnosis.
#4. Ignoring Other Warning Lights.
One final mistake that people make when trying to fix a check gauge light is ignoring other warning lights that may be present.
For example, these should also be addressed if there are other lights on the dash, such as a low oil pressure light or a low coolant level light. Ignoring these other warning lights can lead to further damage to the vehicle.
Benefits of Fixing Check Gauges Light
Fixing a car’s ‘check gauges’ light is incredibly important for any driver to do in order to keep their vehicle running smoothly.
Although not often considered an integral part of car servicing, these lights can alert the driver to potential issues such as low engine oil or temperature or low battery power.
Catching these issues early on can prevent lasting damage and huge repair bills later on. It is especially important to keep up with this since modern cars contain complex circuitry that could be damaged if the wrong fluids and pressures aren’t maintained.
In addition, a series of well-maintained gauges will extend the general lifespan of the vehicle so it can remain reliable for many years.
Therefore, taking time to regularly look at the check gauge light interpretations is worth the effort to keep your car running optimally and safely.
Repair Costs and Options
DIY Fixes
Some check gauges issues are surprisingly simple to fix yourself. Adding coolant or oil costs under $20 and takes just a few minutes. Replacing a blown fuse runs about $1-5 and requires no tools beyond your fingers.
Basic sensors like coolant temperature or oil pressure switches typically cost $15-50 and can often be swapped out with basic hand tools (though access may be tight on some vehicles).
Even a faulty fuel level sensor might only run $30-80, though getting to it can be tricky depending on your vehicle.
Professional Repair Costs
When you need a mechanic, sensor replacement typically runs $50-200 including labor, depending on which sensor and how hard it is to reach. Instrument cluster problems can cost $200-500 to repair or replace, though some digital clusters will likely be more.
If the warning light revealed a real system problem, you’re looking at bigger numbers. For instance, a water pump replacement might cost $300-600, alternator replacement $200-500, or fuel pump replacement $400-800.
While it may sound like a lot, you could be looking at much more if you simply ignore the problem.
FAQs.
Q: Driving With the Check Gauge Light On Is It Safe and How Long Can You Drive?
It depends on what set the ‘Check Gauges’ light off. If it’s due to low washer fluid levels, then there is no imminent danger in continuing to drive – provided all vehicle systems are still working fine.
Otherwise, it is best to pull over and investigate what triggered the alert as soon as possible.
Concerning low tire pressure, 100 miles would be your driving limit (you also need to drive slow enough not to aggravate the state of your tires).
But given its adverse effects on drivability, it is best to continue driving only when near a pump/service station. If the latter is too far, better stay where you are and call for help.
Q: How Long Does It Take Before the Check Gauge Light Resets?
The length of time for the ‘Check Gauges’ light to disappear from your instrument panel is comparable to that of the CEL (it will never be instantaneous nor consistent).
Depending on the fault code that came with the alert, its priority in engine management, and the severity of the issue.
The time it takes to clear the warning light can fall anywhere from doing a few spins around the block to having your car complete 10 to 20 successful cycles. Luckily, diagnostic scan tools can help reset the ‘Check Gauges’ light much quicker.
Q: Where is the check gauge light located?
Your car’s Check Gauge light is situated on your instrument panel or dashboard. The dashboard design and instruments will differ depending on the make and model of your vehicle.
In addition to monitoring the engine, the instrument panel often monitors the oil, fuel, temperature, and battery power.
Final Words
In summary, the illumination of the check gauge light on the dashboard means the car computer has detected that one or two of the gauges on the vehicle is out of range. Vehicles have several gauges across different sections of a vehicle.
Most vehicle gauges are littered on the instrument cluster to display instructions for the drivers. Once the light appears on the dashboard while driving, pull over to a safe spot and check why the warning light pops up.
If you’re unfamiliar with your vehicle’s underhold working principles, drive to a nearby workshop.
Be aware, that if you continue driving with the warning light can cause catastrophic damage or even lead to a total engine breakdown, depending on the root cause.