P0106 Code – Meaning, Causes, Symptoms (& How To Fix)

If everything goes well, the car will run as expected and no lights are visible on its dashboard. Yet, no matter how well you maintain your vehicle, it’s possible to see the Check Engine Light come on with the P0106 code on your OBD-II scanner.

We explain the meaning and symptoms of the trouble code P0106 in this guide. After we have explained the causes of the problem, it may become easier to find the right solution so that you can return on your way. 

Definition of Code P0106

P0106 – Manifold Absolute Pressure/Barometric Pressure – Circuit Range/Performance Problem

What does the P0106 code mean?

A problem has been identified by the Manifold Absolute Press/BARO Sensor Range/Performance code P0106. If the PCM determines that the readings of the MAP/BARO sensors are irregular and inaccurate, this code will be displayed. 

According to engine load, the MAP sensor signal should range from 1 to 4.5 Volts. It means the signal fell below or over a preset amount for a set time. 

According to the Society of Automotive Engineers, this code can be considered generic. The manufacturer of your vehicle could change the meaning of the code. 

P0106 Trouble Code Symptoms

The Check Engine Light may first come on, displaying the P0106 troublecode. However, it won’t be far after that when the other symptoms begin to occur. These are many and they can be ruled out. 

These are some of the most frequent P0106 symptoms.

What causes the P0106 code?

There are numerous causes that can lead to the P0106 trouble code, which is why it’s so important to run through the standard diagnostic procedures. Here are some possible causes that you may discover while doing your research.

What is the P0106 code?

Serious – If the Check Engine Light comes on and you find the P0106 code, it’s best to stop driving immediately. You don’t want to cause any further damage.

A malfunctioning throttle can cause problems on the roads due to a MAP sensor problem. The motor can be damaged, and this will cost you a lot to fix. 

How can you fix the code P0106?

Once you have completed a detailed diagnosis, it will become possible to determine how to correct the trouble code P0106. Below are some that people think is appropriate.

• Replace MAP/BARO Sensor
• Electric short circuit repair
• Vacuum leak repair
• System for exhaust gas recirculation (EGR).
• Replace/update PCM

Common mistakes in diagnosing P0106

Many people use the P0106 code to fix what they believe is a bad sensor. While this might seem to be the obvious fix, it shouldn’t be the first assumption.

Instead, it’s best to examine the system and look for faulty wiring. It’s also possible that the sensor is just contaminated and needs to be cleaned or reseated. 

How to diagnose P0106 Trouble code

You can quickly diagnose the P0106 DTC with a professional-grade code scanner. Start with your car's service manual. We also have some suggestions for you to follow.

Below are some basic guidelines.

1. You should check all trouble codes. For more details, consult freeze frame data
2. For cracks and leaks, inspect your intake duct. Make sure all clamps are tightened and secured.
3. To ensure that the connectors and wiring are in good condition, you should inspect them carefully. 
4. For now, turn the ignition on but do not start the engine.
5. Use your scanner to evaluate the data from the MAP sensor. The drop should be between 4.5 and 1 volt. If you aren’t seeing this drop, there could be an issue with the sensor or wiring.
6. The vacuum pump is a good way to check the MAP sensor. To check if voltage drops, vacuum the area 20 inches without starting the engine. If it doesn’t drop, clean the hose and port before testing again.
7. To examine the wiring, you can use a multimeter. Touch your multimeter directly to the sensor and you will see a reading of five volts. If you don’t see that, connect this wire to the car’s PCM. This connection can create the correct voltage. 

Beyond this diagnosis, it’s best to get help from a professional. While it’s unlikely that the EGR system or PCM are causing the problems, both are possible. However, without a high level of expertise, you don’t want to mess with either of these. 

Price Estimated for P0106 Repairs

Once you have a complete diagnosis, it will help determine which part should be replaced. So you can understand what you're looking at, we outline both the labor and parts costs.

• Replace MAP/BARO sensor – $75-$250
• Repair electrical short – $50-$550
• Repair vacuum leak – $125-$850
• Fix exhaust gas recirculation (EGR) system – $100-$650
• Update/replace PCM – $250-$2,500

Here are some mechanics tips about the P0106 code

To evaluate proper fuel delivery, engine load and other parameters, the PCM requires data from the MAP sensor. The MAP sensor is also used for EGR functionality and ignition timing. The MAP sensor measures intake manifold pressure. The Barometric (BARO), Pressure Sensor is used to measure the atmospheric pressure. These two sensors can be combined in most cases to create one.

Unfortunately, not all vehicles have a MAP sensor. To determine how much fuel to burn, the computer relies on the mass airflow sensor. The car may also have an MAF sensor as the primary operation and a secondary MAP sensor.