2012 Mazda CX-9: check engine light

5 of the 221 complaints about the 2012 Mazda CX-9 describe check engine light.

owner complaints: 5
of this car's complaints: 2%
typical mileage: 90,000
recalls: 0

Is there a fix? 37 service bulletins cover this area of the car. See below

Check engine light by model year

2021
2
2020
2
2019
3
2018
6
2017
9
2016
10
2015
8
2014
7
2013
8
2012
5
2011
7
2010
6
2009
2
2008
1
2007
5

What owners say

Filed Mar 10, 2019 · Engine · 128,000 miles · NY

Vehicle stalled while exiting the highway, engine light on, noise from timing chain area, vehicle overheats, water pump failure pushes antifreeze into the oil compartment causing the engine to get damaged within minutes whiteout a warning. This is obviously a major very expensive safety issue.

Filed Feb 21, 2019 · Engine, Transmission · 90,000 miles · WI

I own a 2012 mazda cx9, which I purchased new. On monday morning (november 12, 2018) my (check engine light came on) and so I took it immediately to the dealership for diagnosis. My car was running beautifully, so I just assumed with the weather change, perhaps the gas cap wasn't tightened, and they just needed to clear the codes. It turns out the water pump failed and apparently destroyed the entire engine. Which became apparent as I drove it to the dealership for diagnosis, per their recommendation. My car is well maintained based on the dealer recommendations and is consistently serviced at the mazda dealership. The car is in fantastic condition with only 90,000. As an owner, I did everything by the book in terms of maintenance for my car. I am letting you know, mazda has a serious problem and it's a safety issue, as well. If a water pump can just fail without warning and completely shut down an engine, that's not good. I think this is far more dangerous than the air bag recall, which is only a concern if you get in an accident. There is no warning on the water pump failing, as it's self-contained within the power train and the only way to check this part is by removing the entire engine, which leads me to believe this part was not designed to be a wear part. It's an engineering design flaw, that can cause bodily harm if it fails, because it takes out the entire engine and you lose control over the vehicle.

Filed Jan 28, 2019 · Engine · 92,000 miles · PA

While driving my mazda car, it suddenly started bucking and check engine light came on. Car was towed to the dealership. Per mazda mechanic, water pump malfunctioned forcing coolant into the engine. Feel this poses a significant safety issue as there was very little warning posing risk of accident, engine overheating and potential fire. This appears to be a common issue as multiple other posts reported

Filed Dec 27, 2017 · Transmission · 76,000 miles · TX

If water pump fails the engine will shut down without warning or any type of check engine light or alert. Coolant will flood crankcase immediately and ruin the engine . This occurred while driving creating a serious safety issue potentially causing a collision.

Filed Oct 8, 2017 · Engine, Fuel system · 40,000 miles · NY

Multiple trips to the dealership and an independent mechanic and the check engine light (cel) comes on with a diagnosis of evaporating system / loose gas cap. Multiple diagnostics fees, a gas tank pressure test and 3 gas caps later and the problem has not been fixed. I noticed a few online forums with several others complaining of the same issue across a wide rage of years and mazda models. There is a design problem with mazada evaporating, fuel and emissions systems. The dealer cannot identify the problem. Beyond replacing the gas cap and collecting a diagnostic fee.