2025 Chevrolet Equinox: check engine light

Filed Oct 23, 2026 · Engine · ME

Roughly 6 months ago, the check engine light came on in my 2025 Chevrolet Equinox RS, which had under 20,000 miles on it at the time. I purchased an OBD scanner to run a diagnostic test, which came back with error code P04FB (Crankcase Ventilation Hose Connection Pressure Sensor Issue). I called the dealership that sold me the vehicle, and they ran their own diagnostics. They encountered the same error code, and ended up replacing the "faulty" crankcase ventilation pressure sensor, which was covered under warranty. Less than a week after they replaced the sensor, the check engine light came back on. I re-ran my OBD scanner, and it showed the same exact error code as before. Basically, the sensor was replaced, but the issue has not been resolved. I've been keeping tabs on GM's bulletin regarding this issue (which is apparently a known issue), and I'm concerned about the fact that there haven't been any recent updates regarding a fix. GM's own recommendation to dealerships is to simply clear the error code and return the vehicle to the customer... I can clear the code myself, but that certainly does not prevent it from coming back. At this point, the error code has been cleared at least 10 times, and it always comes back within a few days of clearing. This becomes a safety issue because we are quickly approaching the Winter months again, and the temperatures get very cold where I live. When the check engine light is on, my car fully prevents me from using the remote-start feature. I'm unable to remotely start the car from both my key FOB, and from the MyChevrolet app. Thank you for your attention to this matter. My hope is that GM's engineers find a real solution to this problem, and quickly! Because, as I said before, this has been an ongoing issue for many months, and I've yet to see any meaningful movement from GM on this issue.

Filed Oct 6, 2026 · Driver assistance, Electrical · KY

1. The telematics control module failed and was replaced by the dealer under recall N262547330, along with the battery. The vehicle is available for inspection. The original module was kept by the dealer when it was replaced. 2. The vehicle went completely dead without warning — it could not be unlocked or started. It happened at home, but had it happened on the road I would have been stranded. The keyless entry also no longer works, so I cannot reliably get into the vehicle. 3. Yes. The dealer confirmed the telematics module failure and replaced it, and replaced the battery. The ongoing problems — failed software updates, "no cellular signal" message, check engine light, and keyless entry failure — have not been diagnosed yet. 4. The vehicle was inspected and repaired by [XXX] Chevrolet GMC in [XXX]. GM's customer resolution team is involved in the case but has not physically inspected the vehicle. No police or insurance inspection. 5. The navigation/GPS was glitching intermittently before the vehicle went dead in August 2026. The last successful software update was XXX — every update since then has failed. The check engine light came on at pickup on XXX. The "no cellular signal" message appears every time an update is attempted. The keyless entry stopped working recently. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 15, 2026 · Engine, Fuel system · FL

The vehicle lost acceleration/propulsion while traveling at highway speed on a major bridge with limited safe shoulder space. The vehicle suddenly stopped providing power needed to maintain speed in fast-moving traffic. Passengers included an infant, young child, and other family members. This created a serious safety risk because there was little room to safely pull over while traffic continued around the vehicle. The vehicle was towed to an authorized Chevrolet dealer and is available for inspection. The cause has not yet been confirmed. The vehicle has about 15,000 miles. Shortly after the lease began, the check engine light came on intermittently and then turned off the next time the vehicle was driven. There have also been prior concerns with unexpected automatic emergency braking behavior. This complaint is being filed because sudden loss of acceleration/propulsion at highway speed on a bridge creates a serious crash risk.

Filed May 19, 2026 · Transmission · 24,000 miles · TX

The contact owns a 2025 Chevrolet Equinox. The contact stated while driving at an undisclosed speed, the transmission independently shifted into neutral. No warning light illuminated. The vehicle lost motive power. The contact stated that the vehicle stopped in the middle of a busy road. The contact stated that while attempting to start the vehicle, the vehicle started. In addition, the contact stated that the failure was persistent. In addition, the contact stated that later the check engine warning light illuminated. The vehicle was taken to the dealer, however the vehicle had not been inspected. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,000.

Filed May 15, 2026 · Engine, Lights · IN

The back lighting for the controls does not work the check engine light is on the dealer said there is no fix for either one of these items at this time

Filed Apr 24, 2026 · Engine · WV

This is a 2025 vehicle with 25,000 miles and the Check Engine Soon light stays illuminated due to a faulty PCV Valve or possibly a poorly designed crankcase. The engine code is P04FB and is commonly found as an issue when you do a search. As a safety precaution, the vehicle is programmed to not allow the remote start to work as designed when the engine light is on so this issue affects the overall functionality of the car. Having spoken with the dealership, they report seeing that engine code often and that the part is on backorder. The dealership seems to think it's the crankcase causing the issue and not the PCV Valve as the fix they have been ordering for them is the case. It will potentially go away as the weather is hotter, but if a chilly night or morning comes up, then the light will come back on because there is moisture buildup on the PCV Valve when the temperature drops that causes the light to come on. With all of the complaints I have read online for this very issue, I would like to see the federal safety agency step up and make Chevy fix their problem. Thank you.

Filed Apr 21, 2026 · Electrical · VT

wiring harness on PCV Valve causes check engine light to come on as soon as it rains or gets wet. Dealer has tried multiple times to fix issue to no avail. The parts are on national back order and they can not get them. Dealer has told me that this is a know issue with this model year equinox.

Filed Apr 7, 2026 · Brakes, Electrical · CO

On Monday, April 6th, I was turning into a parking lot and the braking system, specifically the anti-lock braking system (ABS) and electronic brake control module, appeared to malfunction. While driving, I received a warning indicating the ABS was off, and the brake pedal became soft with reduced stopping ability. The check engine light also came on. I had to coast the vehicle to a complete stop. The vehicle is available for inspection upon request. The loss of normal braking function significantly reduced my ability to stop the vehicle safely, increasing the risk of a collision. This created a dangerous situation for myself, passengers, and other drivers on the road. Brake failure at any speed presents a serious safety hazard.I am aware of similar complaints reported for this issue. My vehicle was towed to and inspected by a dealership where it sat overnight before being diagnosed; however, they were unable to reproduce the issue at the time of service. Despite this, the braking failure did occur and remains a safety concern. The service advisor told me to "bring it back if it happens again" and that it "lost communication with the EBCM" which sometimes happens. The vehicle has not yet been inspected by the manufacturer directly, police, or insurance representatives. There were no warning lamps or other symptoms of this problem prior to the failure.

Filed Feb 28, 2026 · Electrical · TX

2025 chevrolet equinox had, on numrous occasions, complete power failure. The vehicle had to be jump started more than once. The vehicle was brought in to the dealership, by the owner, with power failure concerns. The vehicle was towed to the dealership due to complete power failure concerns. The vehicle had brake pedal issue when power failure occurred. Meaning the brake pedal was not able to be pressed. Display signals: erroneous date/time, ABS, check engine, vehicle drive mode unavailable your vehicle may need service. Furthermore, on one ocassion a power surge was detected. The vehicle was diagnosed and an advisor stated the telemetry module is going out. However, the part that was replaced in the 2025 chevrolet equinox, several weeks later, was actually the telematic control module. The vehicle displays drive mode unavailable your vehicle may need service, even after telematic control module replacement beginning the next day after part replacement. The message displayed by the 2025 equinox occurs on a daily basis. Issues are october 2025 to present day.

Filed Jan 10, 2026 · Electrical, Transmission · FL

Got the equinox brand new on march 2025. Few weeks later had to take it to service/dealer with backup camera problems and it had to be replaced. It started to have speakers issues due to a very loud humming sound while driving. Also window from drivers side runs slower than the rest of windows. The visibility through front glass is non existent when raining due to the angle. Transmition started slipping and started to have a check engine light pop up and had to take it to service again... And finally at the beggining of november had to take it to service due to a sudden battery drain. She wouldnt turn on for no reason.the defective module is on backorder with no estimated arrival date, leaving the vehicle unusable. Its been there for 2 months now... They provided a loaner. Everything has been confirmed by dealer. They said that had 3 pages of codes pop up to be fixed.

Filed Dec 19, 2025 · Engine, Fuel system · MD

Check engine light was on after just sitting in the snow for two days. Dealer is saying that it is a fuel injector and something with the gas. I hope this fixes it.

Filed Dec 19, 2025 · Engine, Fuel system · MD

My car threw on the check engine light and a note flashed on the screen and car just slowed down immediately. I had to press on the brakes really hard to get it home and then the transmission wouldn’t go in reverse. I took it to the dealer and they couldn’t duplicate the problem but said the battery contacts weren’t tight.