Why is my Chevy Equinox saying engine power is reduced?

The issue indicates the vehicle’s engine control system has detected a fault and is limiting power to protect the engine. It is not a single specific problem, but a warning that requires diagnosis to prevent damage or unsafe driving conditions.

In practical terms, the Equinox’s warning lights or messages—such as “Engine Power is Reduced” or “Reduced Engine Power”—happen when the vehicle’s computer, which coordinates throttle, fuel, and ignition, senses an abnormal reading or condition. The goal is to keep you moving safely while the root cause is identified and repaired. Causes can be diverse, ranging from a minor sensor hiccup to a more serious engine or fuel-system fault. A diagnostic scan with an OBD-II reader is typically the first step to pinpoint the exact code triggering the message.

What the warning means for your Equinox

Understanding this message helps drivers decide how to respond. When the engine power is reduced, the PCM (powertrain control module) limits torque to protect the engine and catalytic converter. You may notice reduced acceleration, limp-home behavior, or the engine running rough. The Check Engine light may also be illuminated, and fault codes stored in the ECU guide technicians to the problem area.

Common causes

Below are the most frequent reasons a Chevy Equinox might display this warning. The list covers multiple systems that the engine control module monitors and can limit power for, to keep you safe and prevent further damage.

• Throttle body or accelerator pedal position sensor issues — problems with the electronic throttle control can send incorrect position data, triggering a power reduction.


• Misfires from ignition problems — worn or fouled spark plugs, failing ignition coils, or coil packs can cause misfires and trigger protective limp modes.


• Fuel delivery problems — low fuel pressure, a failing fuel pump, a clogged fuel filter, or dirty injectors can starve the engine of fuel at the wrong time.


• Air intake and sensor faults — dirty or faulty MAF (mass airflow) sensor, MAP (manifold absolute pressure) sensor, or vacuum leaks can confuse the air-fuel calculation.


• Exhaust or emissions issues — a clogged catalytic converter, restricted exhaust, or EGR faults can hamper exhaust flow and affect performance.


• Cooling system or overheating — if the engine temperature is outside the normal range, the PCM may reduce power to prevent damage.


• Electrical/software faults — corroded connectors, faulty wiring, or outdated/erroneous software can trigger limp modes or erroneous readings.

Note: This list reflects common patterns observed across many Equinox generations. Specific codes you retrieve from a scan will point to the exact cause, whether it’s a sensor, fuel, ignition, or cooling system issue. A dealership or qualified shop can confirm with a code read and symptom check.

How to diagnose and troubleshoot

Before diving into repairs, you can gather information and perform basic checks that may reveal the culprit or prepare you for a professional diagnosis. The following steps are practical and help avoid unnecessary repairs.

• Obtain trouble codes with an OBD-II scanner or a trusted mechanic’s diagnostic tool. Write down the codes and any freeze-frame data to share with a technician.


• Assess symptoms and driving conditions — note when power reduction occurs (accelerating, climbing hills, cold starts, after long idle, etc.).


• Inspect ignition components — check spark plugs and ignition coils for wear or damage and replace as needed.


• Check the air intake path and filters — ensure the air filter is clean and there are no vacuum leaks or cracked hoses.


• Evaluate the fuel system — if you have access to service data, inspect fuel pressure and listen for fuel pump operation; consider fuel system cleaning if appropriate.


• Look for sensor-related codes (e.g., MAF, MAP, TPS) and check for dirty or faulty sensors; cleaning or replacement may be required.


• Confirm cooling system status — verify coolant level and radiator fans operate correctly; overheating can trigger power reduction.


• Check for active recalls or service bulletins related to throttle control, sensors, or the engine management system—manufacturers occasionally address known issues with updates.


• Do not ignore persistent warnings — if the vehicle feels unsafe to drive (stalling, severe misfires, loss of power in traffic), have it towed to a shop rather than continuing to drive.

In many cases, a simple code interpretation leads to a straightforward fix, such as replacing worn spark plugs, cleaning a dirty throttle body, or updating software. More complex cases may require parts replacement or system repairs that a professional technician should perform.

Is it safe to drive right now?

If the vehicle retains some power and you can drive short distances at low speeds, you may be able to reach a dealership or repair shop. If the engine feels heavy, you notice misfires, knocking, overheating, a strong fuel smell, or the warning persists after a restart, stop driving and seek roadside assistance. Safety first.

When to seek professional help

Contact a GM dealership or qualified auto shop promptly if the diagnostic codes point to throttle control, ignition, or fuel-system faults, or if the warning persists after basic checks. Timely service can prevent potential damage and restore proper performance.

What your mechanic will check

A technician will typically perform a diagnostic scan to read codes, inspect wiring and connectors, test sensors (MAF, MAP, TPS), check ignition components, verify fuel pressure, inspect for vacuum leaks, and assess cooling system readings. They may also review service bulletins and perform software updates if applicable.

Summary

The “Engine Power is Reduced” warning on a Chevy Equinox signals the vehicle has detected a fault in the engine management or related systems and is limiting power to protect the engine. Common causes include throttle control issues, misfires, fuel delivery problems, sensor faults, exhaust restrictions, and cooling system concerns. Start with a diagnostic scan to retrieve codes, then follow practical checks like inspecting ignition components, sensors, air and fuel systems, and cooling. If the warning persists or you notice dangerous driving symptoms, seek professional help promptly. Regular maintenance and timely software updates can help prevent many of these triggers.

What does engine power reduced mean on a Chevy Equinox?

If you have an “Engine Power Reduced” alert, it could be the result of a number of different issues. But, the most common culprit is a dirty throttle body. This occurs when the throttle body is clogged with debris and can't allow air to pass smoothly into the engine.

Is there a recall on the Chevy Equinox reduced engine power?

There is no single, blanket recall for the "reduced engine power" warning on Chevy Equinox vehicles, as the issue has multiple causes for different model years. For 2018-2022 models, the problem is often due to a separation of the charge air cooler outlet tube from the throttle body. For newer models (2023-2025), a similar issue can arise from a damaged anti-abrasion sleeve on the charge air inlet pipe. Other potential causes, which may or may not be covered by a recall, include fuel pump issues, a dirty throttle body, or problems with sensors.
 
Specific recalls and technical service bulletins (TSBs)

• 2018-2022 Equinox: A technical service bulletin (TSB) addresses the charge air cooler (CAC) outlet tube separating from the throttle body, which can cause reduced engine power, stalling, and trouble codes like P0101 or P0299. 
• 2019 Equinox: An emissions recall covered 2019 models with a 1.5L engine where the intake charge air cooler outlet duct could disconnect. 
• 2023-2025 Equinox: A technical service bulletin addresses splits in the anti-abrasion sleeve over the charge air inlet pipe, which can cause similar issues to the older models. 
• 2021-2022 Equinox: A recall was issued for the fuel pump module potentially not providing sufficient fuel, which can cause the engine to stall. 

How to check if your vehicle is affected

• Check for recalls: Use your vehicle's VIN to check for any open recalls on the NHTSA website or your GM dealer's website. 
• Consult the TSBs: If your vehicle matches the model years and symptoms described in the TSBs, it is likely experiencing one of these issues.
• Consult a professional: Take your vehicle to a certified GM technician. They can diagnose the specific cause and determine if it falls under a recall or TSB. 

What to do if the warning appears

• Safely pull over: When you see the "Engine Power Reduced" message, find a safe place to pull over immediately and turn off the engine. 
• Restart the engine: In some cases, restarting the car can clear the warning temporarily, but the underlying problem remains and will likely cause the warning to reappear. 
• Seek professional help: Do not ignore the warning. Have a qualified technician diagnose the problem to prevent further damage and ensure your safety. 

How do you fix engine power reduced?

To fix reduced engine power, first try a temporary fix like restarting the engine, which may clear a temporary glitch. If the problem persists, the underlying cause is likely a sensor issue (like a dirty throttle body or faulty MAF sensor), a dirty air filter, or a problem with the electrical system. You can clean the throttle body or replace the air filter yourself, or use an OBD-II scanner to clear codes.
 
This video demonstrates how to diagnose a reduced engine power issue using an OBD-II scanner: 1m1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · Aug 4, 2020
Temporary fix

• Restart the engine: Turn the engine off, wait a few seconds, and then restart the vehicle to see if the warning light clears and power is restored. 

Common causes and fixes

• Dirty throttle body: Carbon buildup can cause performance issues. 
  • Fix: Clean the throttle body with a throttle body cleaner and a brush. If cleaning doesn't work, it may need to be replaced. 
• Dirty or clogged air filter: A clogged filter restricts airflow to the engine. 
  • Fix: Check and replace the air filter if it is dirty. 
• Faulty or dirty sensors: Issues with sensors like the Mass Air Flow (MAF) or Accelerator Pedal Position sensors can trigger this warning. 
  • Fix: Clean the MAF sensor. If the sensor is faulty, it will need to be replaced. 
• Electrical issues: Problems with the battery, alternator, or wiring can disrupt the system. 
  • Fix: Check and clean corroded battery cables. A failing alternator or weak battery can also cause this, so have your charging system tested. 
• OBD-II scanner: An OBD-II scanner can read and clear diagnostic trouble codes that trigger the warning. 
  • Fix: Connect an OBD-II scanner to your vehicle's port and follow the instructions to clear the codes. This is often a temporary fix, and the underlying issue will need to be addressed to prevent the light from reappearing. 

Other potential fixes

• Service the fuel system: Issues with fuel injectors or filters can cause power loss. 
• Check the catalytic converter: A clogged catalytic converter can restrict exhaust flow. 
• Diagnose transmission problems: In some cases, transmission issues can trigger this warning. 

This video demonstrates how to clean a throttle body to fix the reduced engine power issue: 58sLife After LifeYouTube · Sep 17, 2017
When to see a mechanic

• If the temporary fixes don't work or if you're not comfortable performing the repairs yourself, take the vehicle to a professional mechanic to have them diagnose and fix the underlying problem. 

Can I still drive my Equinox with reduced power?

Can You Drive with an “Engine Power Reduced” Message? You can drive with this message, but again, the purpose of Limp Mode is to provide enough power for you to get to a safe place. You won't be able to exceed a certain speed, which can put you in a dangerous situation if you try to travel on a busy highway.