How to solve P0107 Error Code : P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Ever been cruising down the road when suddenly, your vehicle’s “Check Engine” light comes on, accompanied by a noticeable drop in performance?

You pull out your OBD-II scanner and it throws you a cryptic message – “P0107: Manifold Absolute Pressure/Barometric Pressure Circuit Low Input”.

What in the world does that mean? Well, you’re about to find out!

Understanding P0107 Error Code


P0107 is a standard OBD-II trouble code. It indicates that the Engine Control Module (ECM) has detected a low voltage input from the Manifold Absolute Pressure (MAP) sensor or the Barometric Pressure (BARO) sensor.

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This code is crucial as these sensors measure the pressure in the engine’s intake manifold. This information helps the ECM regulate fuel injection, ignition timing, and other engine operations. A faulty reading can throw these functions off balance, leading to numerous problems.

Causes of P0107 Error Code

Mechanical Issues

A vacuum leak in the intake manifold could lead to a low pressure reading, triggering the P0107 code.

Electrical Issues

Faulty wiring or connections in the MAP/BARO sensor circuit might cause low voltage readings.

Sensor Problems

A failing or faulty MAP/BARO sensor could also give inaccurate readings, leading to the P0107 error code.

Symptoms of P0107 Error Code

Performance Issues

When the P0107 code is present, the vehicle may experience poor acceleration and reduced power.

Ignition Problems

You might notice the engine misfiring or having difficulty starting.

Fuel Economy

The vehicle’s fuel economy might decrease as the ECM can’t properly regulate fuel injection.

Diagnosing P0107 Error Code

Tools Required

Typically, an OBD-II scanner, multimeter, and a vacuum gauge will be needed for diagnostics.


Inspection of Manifold

Inspect the intake manifold for vacuum leaks. Check for loose or damaged hoses.

Electrical Circuit Testing

Use the multimeter to check the wiring and connections of the sensor circuit.

Fixing P0107 Error Code

Mechanical Fixes

If a vacuum leak is found, the damaged part should be replaced to rectify the issue.

Electrical Fixes

Repair or replace any damaged wiring or connectors in the circuit.

Sensor Replacement

If the MAP/BARO sensor is faulty, it should be replaced.

Preventing P0107 Error Code

Regular Maintenance

Regular inspection and maintenance of the intake manifold and the MAP/BARO sensor can prevent the occurrence of the P0107 code. This includes looking for potential vacuum leaks or checking for wear and tear in the wiring.

Early Diagnostics

Regularly scanning your vehicle with an OBD-II scanner helps catch error codes early, allowing you to address the problem before it leads to more serious damage or performance issues.

Quality Parts Installation

Using high-quality, reliable parts for your vehicle, especially when replacing the MAP/BARO sensor or related components, can help prevent this issue.


The P0107 error code, though a bit cryptic, essentially points towards an issue with your vehicle’s MAP/BARO sensor circuit. Whether it’s a mechanical, electrical, or sensor issue, diagnosing and fixing it promptly can prevent more significant damage and keep your vehicle running smoothly. Regular maintenance and early diagnostics are key to keeping such problems at bay. Remember, your vehicle is as good as the care you provide to it!


What is the P0107 Error Code?

  1. P0107 is an OBD-II trouble code indicating a low voltage input from the MAP/BARO sensor.

What causes the P0107 Error Code?

  1. Causes can include mechanical issues like a vacuum leak, electrical issues like faulty wiring, or problems with the MAP/BARO sensor itself.

What symptoms might I notice if my vehicle has a P0107 error?

  1. Symptoms can include poor acceleration, reduced power, engine misfires, starting difficulties, and decreased fuel economy.

How do I diagnose a P0107 Error Code?

  1. Diagnosis usually involves using an OBD-II scanner, multimeter, and a vacuum gauge to inspect the manifold, test the electrical circuit, and examine the sensor.

How can I prevent the P0107 Error Code?

  1. Regular maintenance, early diagnostics with an OBD-II scanner, and the use of high-quality replacement parts can help prevent the P0107 error code.