P0107 Code Meaning and Next Steps

First checks take 10 to 15 minutes for the first checks. No special tools are usually needed for the first checks.

Can you keep driving?

Stop driving if any of these apply

!The engine starts running much worse, stalls, or the warning light flashes.
!The vehicle begins to overheat or lose power sharply while the code is active.

If the light is steady and the vehicle still drives normally: Often yes for a short time, but it should not be ignored.

What to check first

Step-by-step checks

1
Free - no tools
Inspect the MAP connector and harness for a pin fit problem, corrosion, or chafing
2
Free - no tools
If the sensor uses a vacuum hose, check for a disconnected, blocked, or damaged line
3
Basic tool needed
Compare the key-on engine-off MAP reading with the local barometric reading if scan data is available
4
Basic tool needed
Look for moisture or contamination in the connector or sensor port
5
Basic tool needed
If the fault appeared after recent work, verify the hose routing and connector seating first

If the code returns

-If the signal is still low after the visible checks, circuit testing for a short becomes more important.
-If the reading changes when the harness is moved, wiring deserves a closer look than the sensor body alone.
-If the code returns after a replacement, revisit the reference and ground side before buying another part.

Background

What this code means

P0107 is a generic OBD-II manifold absolute pressure (MAP) sensor code.

A low signal can come from a short to ground, a sensor that is biased low, or a vacuum path that is not behaving the way the ECU expects.

Poor power, odd fueling, or a load calculation that feels too low can show up when the MAP signal is pulled down.

Diagnosis

Common causes

Most common

Short to ground

A wiring short can pull the MAP signal lower than expected.

Common

Failing MAP sensor

The sensor can drift low internally even if it still responds a little.

Common

Vacuum path problem

A damaged hose or blocked port can distort the reading.

Possible

Connector or pin issue

A loose or corroded connection can behave like a low-signal fault.

Avoid these mistakes

What not to do

xDo not replace the sensor first if there is an obvious wiring, connector, or intake issue.
xDo not ignore drivability changes just because the code sounds like a sensor problem.

Parts

Parts that may need replacing

PartTypical costNotes

MAP sensor$40-$160Relevant when the sensor or circuit tests poorly.

Vacuum hose$10-$40Worth replacing if the line is cracked, loose, or blocked.

Connector repair$15-$90Useful if the plug or pins are corroded or loose.

Related OBD codes

P0105

P0105 usually means the MAP sensor circuit has a malfunction.

P0106

P0106 usually means the MAP signal is outside the expected range or performance window.

P0108

P0108 usually means the MAP signal is reading too high.

P0109

P0109 usually means the MAP signal is intermittent or erratic.

Source notes

Generic OBD-II (SAE J1979 / ISO 15031-5). P0107 was expanded around common low-input MAP faults, including shorted circuits, sensor bias, and vacuum path issues.

This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.

This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.

Last reviewed: 2026-04-10

Reference: Open reference

P0107 - P0107 Usually Means the Map Signal Is Reading Too Low