P0107 MAP Sensor Code Explained (1998-2007 3.0L V6 Honda Accord)

  • By: Abraham Torres-Arredondo
  • Created: 13 July 2025
  • Updated: 13 July 2025
  • Articl Id: 626
P0107 MAP Sensor Code Explained (1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 3.0L V6 Honda Accord)

In this tutorial, I'll break down exactly what a P0107 MAP Sensor Voltage Low code means, what symptoms to look out for, and what usually causes it.

You’ll also learn whether it makes more sense to replace the sensor or test it first —using just a multimeter and a handheld vacuum pump.

So if a P0107 code is lighting up the check engine light on your 3.0L V6 Honda Accord, by the end of this guide you’ll know how to troubleshoot it, fix it, and avoid wasting time or money on guesswork.

Contents of this tutorial:

APPLIES TO: This tutorial applies to the following vehicles:

  • 3.0L V6 Honda Accord: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007.

MAP SENSOR MULTIMETER TESTS:

OTHER MAP SENSOR TROUBLE CODES EXPLAINED:

MAP SENSOR CODE WON'T GO AWAY:

What Does P0107 Really Mean?

Your scan tool might show one of two descriptions for the P0107 code stored in your 3.0L V6 Honda Accord's PCM memory —depending on whether it gives you a generic definition or one specific to Honda:

  • Generic OBD II Definition: P0107 –Manifold Absolute Pressure/Barometric Pressure Circuit Low Input.
  • Honda Factory Definition: P0107 –MAP Sensor Voltage Too Low.

So what does that mean in plain English? The PCM (Powertrain Control Module) is seeing a voltage signal from the MAP sensor that's way too low —usually stuck under 0.25 Volts. That low signal throws off how the PCM calculates fuel delivery, because it no longer knows how much air is actually entering the engine.

To really make sense of this code, you need to know what normal looks like. When everything's working right:

  • The MAP sensor should output around 1.0 to 1.5 Volts at idle (when intake vacuum is high and your foot is off the gas pedal).
  • As you step on the gas and vacuum drops, that voltage should climb —sometimes up to 4.5 Volts at wide open throttle.

But when the PCM sets a P0107, it's because the voltage is stuck near zero —even during conditions where it should be higher. That makes the PCM think the engine is under no load at all, when in reality it could be accelerating, climbing a hill, or running with the A/C on and a full carload.

When the MAP reading doesn't match what's actually happening under the hood, the PCM loses trust in the sensor. It switches to a preprogrammed fuel delivery strategy that reduces engine power to prevent engine damage —but it ends up wrecking engine performance in the process.

Next, I'll show you the most common symptoms you'll feel when this code shows up.

Common Symptoms Of A Code P0107

The MAP sensor plays a very big role in how your Accord controls fuel delivery and timing —so when it starts sending a bogus signal and triggering a P0107 MAP Sensor Low Voltage code, it's definitely felt in the way the engine runs.

Here are the most common things you might feel or notice:

  • Check engine light is on.
  • Hard to start or takes longer than usual to crank up.
  • Rough idle or occasional stalling.
  • Hesitation or stumbling when you hit the gas.
  • Worse gas mileage than normal.
  • Reduced engine power or a "limp mode" feeling.

Sometimes these symptoms come and go —especially if the MAP sensor is acting up intermittently. But the root of the problem is always the same: the PCM isn't getting the MAP signal it expects, and it's scrambling to keep the engine running right.

Next up, I'll walk you through the most common causes behind this P0107 MAP sensor code.

What Causes Code P0107?

The most common cause of a P0107 MAP Sensor Voltage Low triggering the check engine light on your 3.0L V6 Honda Accord is a bad MAP sensor (but not always).

Just because the MAP signal is low doesn't always mean the sensor itself is the problem. Over the years, I've seen plenty of other causes behind a P0107. Here's a list of what I've run into:

  • Open circuit in the MAP signal wire.
  • Short to Ground on the signal wire somewhere in the harness.
  • Connector problems.
  • Wiring damage near the connector —especially cracked insulation that's peeling off and the exposed copper strands shorting together.
  • Oil inside the MAP sensor from from engine oil blow-by vapors.
  • Vacuum leak from worn intake gaskets letting air in unmetered.
  • Another sensor shorting out and dragging down the 5 Volt reference line shared with the MAP.
  • PCM issue —rare, but not impossible.

The only way to be sure what's going on is to check the MAP sensor's signal, power, and Ground with a multimeter. And yep —you can do it yourself.

Up next, I'll help you figure out if it's worth testing the sensor —or if it makes more sense to just replace it and move on.

Should You Replace The MAP Sensor?

If you're staring at a P0107 MAP sensor low voltage code on your 1998–2007 3.0L V6 Honda Accord, you might be wondering if it's easier to just swap the sensor and be done with it. And you know what? In many cases, that quick fix actually works.

Plenty of shops take that route —especially since the sensor sits right on top of the intake manifold within easy reach and the price isn't bad (well, if you buy it online that is). If that's the direction you're leaning, here are a couple of MAP sensors from known automotive brands I trust and recommend:

1998-1999 3.0L V6 Honda Accords:

2000-2002 3.0L V6 Honda Accord:

2003-2004 3.0L V6 Honda Accord:

2005-2007 3.0L V6 Honda Accord:

When you buy through one of these links, it helps support this site —at no extra cost to you. I really appreciate it!

But if you're the type who wants to be sure before replacing parts —I hear you. I always recommend testing the MAP sensor before spending any kind of money.

In the tutorials I'm linking below, you'll be able to test the MAP sensor in just a few minutes. No scan tool needed —just a basic multimeter, a hand vacuum pump:

MAP SENSOR MULTIMETER TESTS:

More 3.0L V6 Honda Accord Diagnostic Tutorials

If you're troubleshooting a problem on your 3.0L V6 Honda Accord and want real, step-by-step guidance without the fluff, this index is where to start. I created these tutorials to help make the diagnostic process clear, practical, and way less frustrating.

Here's a quick preview of the kinds of hands-on guides you'll find inside:

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