What Does P0106 Code Means on Chevy and How to Fix it?

If your Chevrolet’s diagnostic tool displays the P0106 code, it likely signifies that the vehicle’s Manifold Air Pressure (MAP)/Barometric Pressure sensor (BARO) circuit is malfunctioning, giving an inaccurate output range, or that the engine is underperforming.

Now, calm down and take a deep breath. In this article, I’ll explain the p0106 error code and provide simple solutions to get rid of it.

What Does P0106 Code Mean on Chevy?

When the P0106 error message is shown, there is likely to be a problem with the Manifold Absolute Pressure, the BARO Sensor Range or the performance of your vehicle.

Whereas the Barometric Pressure BARO sensor detects atmospheric pressure, the MAP sensor measures engine intake manifold pressure. On almost all cars, the MAP sensor and the BARO sensor are combined into one sensor.

If the Power Train Control Module (PCM) detects irregular or inaccurate data from the MAP/BARO sensors, it will set this code.

The MAP Sensor sends engine load data to the PCM. The PCM uses data from the MAP and other sensors. MAP monitors air-to-fuel and engine load. Incorrect air-to-fuel ratio causes the engine to waste fuel or malfunction.

The MAP sensor ensures efficient fuel injection by sending signals to the ECU.

I will talk about this code later in details when discussing the solution. Here is the dissection of code P0106:

• p- Powertrain. Powertrain transfers engine power to the wheels and helps it move.
• 0-Generic manufacturing code derived from the SAE standard
• 1-Fuel and air metering
• 06- Signifies specific code. Here it means, Manifold Air Pressure (MAP) Barometric Pressure Sensor Electric Circuit Output Range and Performance Problem

Note: This SAE code is general. Car manufacturers may interpret this code differently.

How Serious Is A P0106 Code?

If the Check Engine Light is on and you get the P0106 error message, you should pull over right away because the OBD-II system reporting the P0106 error code means there is a serious problem.

A faulty MAP sensor can lead to a faulty throttle, which in turn can prevent your engine from operating smoothly and possibly cause it to backfire. The motor could get damaged, and fixing it would be quite pricey. If one of these terrible things happens while your car is moving, you could be in a lot of danger. 

What Causes Code P0106 On Chevy?

It’s possible that your car will suddenly display a P0106 code without warning, leaving you baffled as to its cause. Chevrolet P0106 error codes may be triggered by a variety of circumstances. But the most common reasons are:

• Faulty Manifold Absolute Pressure (MAP)
• Absolute Pressure Sensor harness is problematic
• Damaged or missing vacuum seal around MAP sensor inlet.
• Limiting airflow into the MAP sensor by closing its vacuum inlet.
• Poor electrical connection in Manifold Absolute Pressure Sensor circuit
• Leaks in air intake system
• Diaphragm failure or lack of a check valve in the intake manifold
• Faulty Engine Control Module (ECM)

What Are The Chevrolet P0106 Code’s Symptoms?

There are a few signs that something is wrong with your Chevy if the code p0106 appears.

The P0106 fault code may initially be indicated by the illumination of the Check Engine Light. But it won’t be long before the other symptoms start to show up. Many are obvious.

Most people with P0106 will experience the following symptoms-

• Engine performance is erratic.
• Poor fuel efficiency
• Black smoke emanating from the exhaust
• Very little or no acceleration
• The engine won’t idle.

How To Fix The P0106 Code On Chevy?

Let’s examine the Chevrolet P0106 error code and see what has to be done to fix it. In order to complete the process of repairing a broken or faulty MAP / BARO sensor on your vehicle finding the root of the problem is the first step in fixing anything.

Here are the tools you need;

• OBD-II scan tool
• Voltmeter
• Vacuum Pump

1. Diagnosing The Error Code P0106 On Chevy

Diagnostics check using a diagnostic scanner can help pinpoint an area that is showing abnormal behavior and reveal the possible location of a malfunction. This helps detect problems before they cause greater damage.

1. You should start by looking at the other error codes and noting their results. Check out the information captured in the freeze frame. Re-record the outcome. Make sure the engine warning light is clean.
2. The next step is to look for a vacuum leak by inspecting the vacuum line (vacuum hose), air intake hose, and intake duct. Additionally, check for the presence of all connectors and ensure a snug fit.
3. Now, turn the key in the ignition without starting the car.
4. Use an OBD-II scan tool to inspect the vehicle’s MAP sensor readings. Under test conditions, the pressure sensor’s voltage should drop from 4.5 volts to around 1 volt. If this isn’t the case, your car may have a problem with a sensor or wiring.
5. Next, you should use a digital multimeter to check the signal wire leading to the manifold absolute pressure sensor for any potential shorts. Don’t start the engine and add 20-inch vacuum. If there is no decrease in voltage, examine the port and hose for blockages. Wash them down, after that. If necessary, throw them out and get new ones.
6. Now you must inspect the MAP sensor’s wiring. Use a digital multimeter to do the test. Hook up the meter’s probe to the MAP sensor. Connect the cable to the vehicle’s PCM if the voltage is significantly different than 5.0 volts. Next, examine the shorts if you get power from the connector but not the PCM.

2. Fixing The Error Code P0106 On Chevy

The diagnostic checks have been run and completed. Now is the moment to fix the Chevrolet’s P0106 malfunction.

Step-1

Prioritizing the severity of the various error codes you’re experiencing is the first step in fixing this issue.

Step-2

You should check your air filter and replace your air intake hose if necessary. Be sure all your connectors are snug and that the MAF sensor is clean.

Step-3

Use an automated corrosion cleaning on the engine ground if it has been damaged.

Step-4

 Inspect the MAP sensor for any damage. If any of the MAP sensor wires are damaged in any way, including fraying or corrosion, then you must replace them all. Simply swap out the connector for the MAP sensor. Replace the MAP sensor if the problem persists. When installing new map sensor check the O-ring if it’s on the right position or not.

Step-5

Error P0106 is usually not caused by a faulty engine computer. If necessary, however, try re-programing or replacing your vehicle’s Engine Control Module and Powertrain Control Module.

How Much Does It Cost to Fix The Chevy P0106 Code?

Chevrolet error code P0106 normally takes 1 hour to fix. Diagnostic time and repair costs are affected by factors such as location, vehicle type, and manufacturer.

Error P0106 could be remedied in a number of ways. Each fix’s estimated price consists of its cost in parts and labor. Labor costs range from $16 to $29 per hour.

Here is a rough breakdown of how much it could cost to replace certain components:

• Air intake system replacement: $50 to $50
• Air intake hoses: $10 to $120
• New MAP sensor: $150 to $250
• ECM replacement: $800 to $1500
• PCM replacement: $1000 to $1200
• Vacuum leak repair: $150-$1000

Note: All of these prices include the labor charge.

Frequently Asked Questions (FAQs)

Conclusion

Any Chevrolet with the P0106 MAP sensor error code should be taken seriously. Before you rush out and replace the sensor, make sure you’ve tried the troubleshooting methods from the article.

Be sure to take the car for a test drive after each step to verify if the Chevy error code P0106 disappears. In the end, if you’ve tried all I’ve suggested and you still have the code, you should consult a professional technician.