Mazda CX-5 Check Engine Light Codes

Is the check engine light on in your Mazda CX-5? If it is, it indicates that your vehicle’s onboard computer has detected a problem with the engine emission system. To identify the issue, you’ll need an OBD-II scanner, which generates specific trouble codes that can help you diagnose and address the problem.

In this article, we will provide detailed Mazda CX-5 check engine light codes, along with explanations for each code. This information will help you understand the issue and how to address it.

1: A Comprehensive List of Mazda CX-5 Check Engine Light Codes :

Below is a detailed list of Mazda  CX-5 check engine light codes. Each code corresponds to a specific issue. When you retrieve the code related to each problem, it becomes easier to resolve the problem quickly.

1.1: Fuel and Air Metering:

1: P0100: This code refers to a general issue in the Mass Air Flow (MAF) Sensor Circuit.

2: P0101: This code indicates an issue with the Mass Air Flow (MAF) Sensor Circuit’s range or performance.

3: P0102: This code signifies that there is a low input problem in the Mass Air Flow (MAF) Sensor Circuit.

4: P0103: This code indicates a high input issue within the Mass Air Flow (MAF) Sensor Circuit.

5: P0107: This code indicates that there is a low input problem in the Manifold Absolute Pressure (MAP) Sensor Circuit.

6: P0108: This code signifies that there is a high input problem in the Manifold Absolute Pressure (MAP) Sensor Circuit.

7: P0113: This code indicates that there is a high input problem in the Intake Air Temperature (IAT) Sensor Circuit.

8: P0117: This code indicates that there is a low input problem in the Engine Coolant Temperature (ECT) Sensor Circuit.

9: P0118: This code signifies that there is a high input problem in the Engine Coolant Temperature (ECT) Sensor Circuit.

1.2: Ignition System and Misfire Detection:

1: P0300: Random/Multiple Cylinder Misfire Detected 

2: P0301: Cylinder 1 Misfire Detected 

3: P0302: Cylinder 2 Misfire Detected 

4: P0303: Cylinder 3 Misfire Detected

5: P0304: Cylinder 4 Misfire Detected

1.3: Fuel System and Injector Circuit 

1: P0171: System Too Lean (Bank 1) 

2: P0172: System Too Rich (Bank 1) 

4: P0174: System Too Lean (Bank 2)

5: P0175: System Too Rich (Bank 2)

1.4: Exhaust System and Emission Control:

1: P0420: This code indicates that the Catalyst System Efficiency is below the threshold for Bank 1. 

2: P0430: This code indicates that the Catalyst System Efficiency is below the threshold for Bank 2. 

3: P0441: This code indicates that there is an issue with the Evaporative Emission Control System, specifically related to an incorrect purge flow.

4: P0442: This code signifies the detection of a small leak in the Evaporative Emission Control System.

5: P0443: This code indicates a problem with the Evaporative Emission Control System’s Purge Control Valve Circuit.

6: P0446: This code indicates a problem with the Evaporative Emission Control System’s Vent Control Circuit.

7: P0455: This code indicates the detection of a significant leak in the Evaporative Emission Control System.

8: P0456: This code means that the Evaporative Emission Control System has detected a very minor or tiny leak.

1.5: Transmission and Drivetrain:

1: P0700: Transmission Control System Malfunction

2: P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) 

3: P0715: Input/Turbine Speed Sensor Circuit Malfunction

4: P0720: Output Speed Sensor Circuit Malfunction

5: P0730: Incorrect Gear Ratio

1.6: Engine Timing and Sensor Issues:

1: P0011: This code means that the Camshaft Position “A” is either too advanced in timing or there’s a performance issue in the system for Bank 1.

2: P0012: This code means that the Camshaft Position “A” timing is too delayed or over-retarded in Bank 1 of the engine.

3: P0016: This code indicates that there’s an issue with the correlation or alignment between the Crankshaft Position and Camshaft Position in Bank 1, Sensor A of the engine.

4: P0017: This code suggests that there’s a problem with the correlation or alignment between the Crankshaft Position and Camshaft Position in Bank 1, Sensor B of the engine.

5: P0021: This code means that the Camshaft Position “A” has either advanced its timing too much or there’s a performance issue in the system for Bank 2.

6: P0022: This trouble code means that the Camshaft Position “A” timing in Bank 2 has been over-retarded or delayed.

7: P0028: This code suggests that there’s a problem with the range or performance of the intake valve control solenoid circuit in Bank 2 of the engine.

1.7: Oxygen Sensor, Heater, and Valve Control Issues:

1: P0031: This is the generic OBD-II trouble code that indicates a problem with the oxygen sensor’s heater circuit in Bank 1, Sensor 1. 

2: P0032: This is a generic OBD-II trouble code that indicates a problem with the oxygen sensor’s heater circuit in Bank 1, Sensor 1.

3: P0037: This is the generic OBD-II trouble code that indicates a problem with the oxygen sensor’s heater circuit in Bank 1, Sensor 2.

4: P0038: This is a standard diagnostic trouble code (DTC) used in vehicles. It signals an issue with the oxygen sensor’s heater circuit in Bank 1, Sensor 2.

5: P0051: This is a generic OBD-II trouble code that indicates a problem with the oxygen sensor’s heater circuit in Bank 2, Sensor 1. 

6: P0052: This is a standard diagnostic trouble code (DTC) used in vehicles. It indicates an issue with the oxygen sensor’s heater circuit in Bank 2, Sensor 1.

7: P0057: This is a standard trouble code that means there’s an issue with the oxygen sensor’s heater circuit in Bank 2, Sensor 2.

8: P0058: This is a standard trouble code that means there’s an issue with the oxygen sensor’s heater circuit in Bank 2, Sensor 2.

1.8: Valve Control, Fuel Pressure, and MAP Sensor Issues:

1: P0075: This is a generic OBD-II trouble code that indicates a problem with the intake valve control solenoid circuit in Bank 1. 

2: P0076: This is a standard trouble code that signals an issue with the intake valve control solenoid circuit in Bank 1.

3: P0077: This is a standard trouble code that signals an issue with the intake valve control solenoid circuit in Bank 1. 

4: P0079: This is a generic OBD-II trouble code that indicates a problem with the exhaust valve control solenoid circuit in Bank 1.

5: P0080: This is a standard trouble code that signals an issue with the exhaust valve control solenoid circuit in Bank 1.

6: P0081: This is a generic OBD-II trouble code that indicates a problem with the intake valve control solenoid circuit in Bank 2. 

7: P0082: This is a standard trouble code that signals an issue with the intake valve control solenoid circuit in Bank 2. 

8: P0083: This is a standard trouble code that signals an issue with the intake valve control solenoid circuit in Bank 2.

9: P0087: This is a standard trouble code that signals an issue with the fuel rail or fuel system pressure being lower than the expected or required level. 

10: P0088: This is a standard trouble code that signals an issue with the fuel rail or fuel system pressure being higher than the expected or required level.

11: P0106: This is a standard trouble code that indicates an issue with the MAP sensor or BARO sensor circuit’s range or performance. 

1.9: Coolant Temperature and Thermostat Issues:

1: P0125: This is a standard trouble code that signals that the engine’s coolant temperature is not getting warm enough for the closed-loop fuel control system to function optimally.

2: P0128: This is a standard trouble code that signals that the engine’s coolant temperature is running below the temperature that the thermostat is designed to regulate. 

2: Conclusion:

While this list provides an extensive range of Mazda CX-5 check engine light codes, it’s important to remember that the list is not exhaustive. If you encounter a code not listed here, consult your vehicle’s manual or seek guidance from a professional mechanic.

The check engine light is a valuable warning system designed to keep your Mazda CX-5 running smoothly and safely. If your check engine light comes on, don’t ignore it. Use this guide to help you identify the problem. And also consult with a professional mechanic or your vehicle’s manual for the most accurate information and advice on how to address the issue.

3: FAQ About Mazda CX-5 check engine light codes

Q: How can I diagnose the cause of my Mazda CX-5’s check engine light?

A: In order to properly diagnose the cause of your Mazda CX-5’s check engine light, you’ll need to have it connected to a vehicle diagnostics tool. This tool will allow a qualified technician to read any codes being thrown by the vehicle’s computer, which can then be used to pinpoint and so address the root cause of the problem.

Q: What should I do if my Mazda CX-5’s check engine light won’t turn off?

A: If your Mazda CX-5’s check engine light won’t turn off, it is likely that the underlying problem has not been properly diagnosed and repaired. If this is the case, you’ll need to have your vehicle examined by a qualified technician in order to find and address the root cause of the issue. Once any necessary repairs are made, the check engine light should turn off automatically.

Q: What type of repairs might be required if my Mazda CX-5’s check engine light is on?

A: Depending on the underlying cause of your Mazda CX-5’s check engine light, various types of repairs may be necessary. Common causes include faulty spark plugs, a bad oxygen sensor, or a loose gas cap. Depending on the cause of the issue, your technician may recommend any number of repairs to address the issue and get your vehicle running smoothly once again.

Q: How can I make sure my Mazda CX-5’s check engine light stays off?

A: The best way to ensure that your Mazda CX-5’s check engine light stays off is to take care of any regularly scheduled maintenance, such as oil changes and tire rotations. Additionally, regularly checking your vehicle’s spark plugs, oxygen sensor, and gas cap can help you avoid any potential issues down the road. Following these simple steps can help you keep your Mazda CX-5 running smoothly for many years to come.

Q: What should I do if my Mazda CX-5’s check engine light comes on again after repair?

A: If your Mazda CX-5’s check engine light comes on again shortly after a repair, it is likely that the underlying issue has not been fully addressed. In this case, it’s important to have your vehicle examined by a qualified technician in order to diagnose and properly address the cause of the issue.

Q: What happens if I ignore my Mazda CX-5’s check engine light?

A: Ignoring your Mazda CX-5’s check engine light can have serious consequences. Not only could it lead to costly repairs down the road, but it can also compromise the performance and safety of your vehicle. That’s why it is always important to diagnose and repair any issues as soon as you notice a check engine light come on in your Mazda CX-5.