A problem with the manifold absolute pressure (MAP) sensor, on your 2.7L V6 Honda Accord, will set a trouble code P0106: MAP Sensor Range/Performance Problem.
In this tutorial I'll explain what this trouble code means. I'll also talk about some of the tests you can perform to find its cause and solution.
Contents of this tutorial:
You can find this tutorial in Spanish here: Código P0106 ¿Qué Significa? (1996-1997 2.7L Honda Accord) (at: autotecnico-online.com).
APPLIES TO: This tutorial, on the P0106 OBD II trouble code, applies to the following vehicles:
- 2.7L V6 Honda Accord: 1995, 1996, 1997
RELATED TROUBLE CODES:
- P0107 -What Does It Mean? (1996-1997 2.7L Honda Accord).
- P0108 -What Does It Mean? (1996-1997 2.7L Honda Accord).
What Does Trouble Code P0106 Mean?
A P0106: MAP Sensor Range/Performance Problem sets when your Honda Accord's fuel injection computer notices a problem with the MAP signal the MAP sensor is producing.
Quite a few things can cause a P0106 trouble code, in the following headings I'll explain what some of them are.
Common Symptoms Of A P0106 Trouble Code
The manifold absolute pressure (MAP) sensor is tasked with measuring the vacuum pressure in the intake manifold.
This vacuum pressure measurement is then used by the fuel injection computer to calculate engine load.
The fuel injection computer can now combine the inputs of engine load, engine RPM, and intake air temperature to calculate the amount of air entering the engine.
Once the computer knows how much air is entering the engine, it can now calculate how much fuel to inject into it.
Since it's an important component of the engine management system, when it fails, engine performance will suffer. You'll see one or more of the following symptoms:
- Check engine light illuminated.
- Rough or low idle.
- Very high idle.
- Engine may start and stall.
- Little to no acceleration.
- Black smoke comes out of the tailpipe when the engine is running.
How Does The MAP Sensor Work?
The MAP sensor's job is to inform the fuel injection computer the intake manifold's vacuum pressure when the engine is running.
When the engine is idling and the throttle plate is closed, intake manifold pressure is high.
This high intake manifold pressure will cause the MAP sensor to produce a low voltage signal (usually around 2 Volts DC).
As you step on the accelerator pedal, the throttle plate opens and the engine accelerates. This causes a decrease in intake manifold vacuum pressure.
This low intake manifold pressure will cause the MAP sensor to produce a high voltage signal. At wide open throttle (like when you trying to run that red light), the MAP sensor produces a voltage around 4 Volts DC.
As long as the fuel injection computer sees the MAP sensor voltage signal decreasing/increasing, as you step on or off the accelerator pedal, it knows that the MAP sensor is functioning correctly.
What Causes A P0106 Trouble Code?
The most common cause of a P0106 trouble code is generally a bad MAP sensor, but not always.
The other common cause of a P0106 is the MAP sensor's o-ring is either missing or damaged.
How To Diagnose And Repair A P0106 Trouble Code
Troubleshooting and resolving a P0106 involves removing the MAP sensor and making sure that it's o-ring is OK.
You'll also need to test the MAP sensor and make sure that it's output signal is not stuck at one value.
The MAP sensor test also involve making sure that it's getting 5 Volts and Ground from the fuel injection computer.
You can conclude that the MAP sensor is bad, and needs to be replaced, if your test results confirm:
- That the MAP sensor signal voltage DOES NOT decrease/increase as vacuum is applied/released to the sensor.
- That the MAP sensor is getting 5 Volts.
- That the MAP sensor is getting Ground.
You can find the MAP sensor test explained in detail here:
Where To Buy The MAP Sensor And Save
There are a lot of knock-off parts that you can buy on the cheap, but that'll only last a few weeks. The following links will help you comparison shop for the MAP sensor of known automotive name brands:
More 2.7L V6 Honda Accord Tutorials
You can find a complete list of 2.7L V6 Honda Accord tutorials in this index:
Here's a small sample of the tutorials you'll find in the index:
- How To Test Engine Compression (1995-1997 2.7L Honda Accord).
- How To Test The Head Gaskets (1995-1997 2.7L Honda Accord).
- P0420 -What Does It Mean? (1996-1997 2.7L Honda Accord).
- How To Test The Ignition System (1995-1997 2.7L Honda Accord).
If this info really saved the day, buy me a beer!