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Engine-Codes – Subaru – P0107 Subaru

P0107 Subaru Code - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Quick Answer

The P0107 diagnostic trouble code for Subaru vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor or Barometric Pressure sensor circuit having a low input signal. Common causes include Faulty MAP sensor or Barometric Pressure sensor, Damaged or corroded wiring/connectors in the sensor circuit, Vacuum leaks in the intake manifold or hoses. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0107 Subaru indicates Manifold Absolute Pressure/Barometric Pressure Circuit Low Input.
Common causes
Common causes include Faulty MAP sensor or Barometric Pressure sensor, Damaged or corroded wiring/connectors in the sensor circuit, Vacuum leaks in the intake manifold or hoses.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0107 Subaru Description

The P0107 diagnostic trouble code for Subaru vehicles indicates a problem with the Manifold Absolute Pressure (MAP) sensor or Barometric Pressure sensor circuit having a low input signal. The MAP sensor is a crucial component of the engine management system, as it measures the pressure inside the intake manifold and provides this information to the engine control unit (ECU). The ECU uses this data to calculate the air density and adjust the air-fuel mixture for optimal combustion.

OBDII Code P0107 Subaru - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0107 Subaru Code - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Common Causes of P0107 Subaru

  1. Faulty MAP sensor or Barometric Pressure sensor
  2. Damaged or corroded wiring/connectors in the sensor circuit
  3. Vacuum leaks in the intake manifold or hoses
  4. Clogged or restricted intake manifold
  5. Issues with the ECU or engine management system

Symptoms of P0107 Subaru

  1. Check engine light illuminated on the dashboard
  2. Rough idling or engine misfires
  3. Poor acceleration and reduced power output
  4. Stalling or difficulty starting the engine
  5. Decreased fuel efficiency

How to Fix P0107 Subaru

  1. Begin by performing a visual inspection of the MAP sensor and its wiring harness to check for any visible damage or corrosion.
  2. Test the MAP sensor using a multimeter to verify its functionality and compare the readings with manufacturer specifications.
  3. Inspect the intake manifold and associated hoses for any leaks or blockages that could affect sensor readings.
  4. Clean or replace the MAP sensor if necessary, ensuring proper installation and connection to the wiring harness.
  5. Clear the diagnostic trouble codes from the ECU using a code reader and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0107 Subaru

The cost of repairing a P0107 code on a Subaru vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of replacing a faulty MAP sensor can range from $50 to $200, while labor costs can add an additional $80 to $150. If the issue is related to wiring or vacuum leaks, additional diagnostic time and repair expenses may be required. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0107 Subaru Code

1. What are the common symptoms of OBDII code P0107 in a Subaru?

- Common symptoms include reduced engine performance, rough idling, stalling, and potentially decreased fuel efficiency.

2. What does the OBDII code P0107 in a Subaru indicate?

- The code indicates a low input in the Manifold Absolute Pressure (MAP) or Barometric Pressure (BARO) circuit.

3. What are the possible causes of OBDII code P0107 in a Subaru?

- Possible causes include a faulty MAP sensor, damaged wiring or connectors in the circuit, vacuum leaks, or a defective Engine Control Module (ECM).

4. How can I diagnose the cause of OBDII code P0107 in my Subaru?

- Diagnose the issue by checking the MAP sensor's wiring and connectors, inspecting for vacuum leaks, testing the sensor's voltage, and scanning the ECM for any related faults.

5. Can a dirty air filter trigger OBDII code P0107 in a Subaru?

- Yes, a dirty air filter can restrict airflow to the MAP sensor, leading to incorrect readings and potentially triggering the P0107 code.

6. Is it safe to continue driving with OBDII code P0107 in my Subaru?

- It is not recommended to drive with this code present, as it can cause further damage to the engine and negatively impact performance.

7. How can I reset OBDII code P0107 in my Subaru?

- To reset the code, you can use an OBDII scanner to clear the fault codes after addressing the underlying issue causing the P0107 code.

8. What are some repair tips for fixing OBDII code P0107 in a Subaru?

- Repair tips include checking and replacing the MAP sensor if faulty, repairing any damaged wiring, fixing vacuum leaks, and ensuring proper sensor connections.

9. Can extreme weather conditions trigger OBDII code P0107 in a Subaru?

- Yes, extreme weather conditions such as very low temperatures can affect the sensor readings and potentially trigger the P0107 code.

10. How much does it typically cost to repair OBDII code P0107 in a Subaru?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

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