AutoCodes – Infiniti – P1105 Infiniti

P1105 Infiniti Code - Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve

Quick Answer

The Manifold Absolute Pressure (MAP) sensor provides instantaneous manifold pressure information to the engine's Engine Control Module (ECM). Common causes include Faulty Manifold Absolute Pressure Switch Solenoid Valve, Manifold Absolute Pressure Switch Solenoid Valve harness is open or shorted, Manifold Absolute Pressure Switch Solenoid Valve sensor poor electrical circuit connector. 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
P1105 Infiniti indicates Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve.
Common causes
Common causes include Faulty Manifold Absolute Pressure Switch Solenoid Valve, Manifold Absolute Pressure Switch Solenoid Valve harness is open or shorted, Manifold Absolute Pressure Switch Solenoid Valve sensor poor electrical circuit connector.
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.
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Code Popularity 17,981
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 14, 2019
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Code P1105 Infiniti Description

The Manifold Absolute Pressure (MAP) sensor provides instantaneous manifold pressure information to the engine's Engine Control Module (ECM). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion. A fuel-injected engine may alternately use a Mass Air Flow (MAF) sensor to detect the intake airflow. A typical configuration employs one or the other, but seldom both.The MAP/BARO Switch solenoid valve switches it's air flow passage according to the voltage signal sent from the ECM.
In some Infiniti vehicles the absolute pressure sensor is built into ECM.
OBDII Code P1105 Infiniti - Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve - AutoCodes.com
P1105 Infiniti Code - Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve

What are the Possible Causes of the DTC P1105 Infiniti?

  • Faulty Manifold Absolute Pressure Switch Solenoid Valve
  • Manifold Absolute Pressure Switch Solenoid Valve harness is open or shorted
  • Manifold Absolute Pressure Switch Solenoid Valve sensor poor electrical circuit connector
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P1105 Infiniti?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1105 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1105 Infiniti code?

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Information for Specific Infiniti Models

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 P1105 Infiniti Code

1. What are common symptoms of OBDII code P1105 in an Infiniti related to the Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve?

- Common symptoms include poor engine performance, rough idling, stalling, and a decrease in fuel efficiency.

2. What can cause OBDII code P1105 in an Infiniti?

- The code can be triggered by a faulty Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve, wiring issues, or a problem with the engine control module.

3. How can I diagnose the cause of OBDII code P1105 in my Infiniti?

- A thorough inspection of the Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve, checking the wiring for any damage, and testing the related circuits with a multimeter can help diagnose the issue.

4. Can I continue to drive my Infiniti with OBDII code P1105?

- It is not recommended to drive your vehicle with this code as it can lead to further engine damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code P1105 in my Infiniti?

- Repairing this code may involve replacing the faulty Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve, repairing any damaged wiring, or reprogramming the engine control module.

6. Are there any DIY tips for fixing OBDII code P1105 in an Infiniti?

- While some simple checks like inspecting the wiring connections can be done by DIY enthusiasts, it's recommended to seek professional help for accurate diagnosis and repair of this code.

7. How much does it typically cost to repair OBDII code P1105 in an Infiniti?

- Repair costs can vary depending on the extent of the issue, the need for parts replacement, and labor charges. On average, expect to pay a few hundred dollars for parts and labor.

8. Can a dirty air filter cause OBDII code P1105 in an Infiniti?

- While a dirty air filter can impact engine performance, it is unlikely to directly trigger OBDII code P1105. Focus on checking the Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve and related components for this particular code.

9. Will resetting the OBDII system clear code P1105 in an Infiniti?

- Resetting the system may temporarily clear the code, but if the underlying issue with the Manifold Absolute Pressure/Barometric Pressure Switch Solenoid Valve is not addressed, the code is likely to reappear.

10. How long does it take to fix OBDII code P1105 in an Infiniti?

- The repair time can vary based on the exact cause of the code and the availability of parts. In general, it can take a few hours to a full day to diagnose and repair OBDII code P1105.

Discuss the causes and fixes for P1105 Infiniti OBDII Code

  • 1997 Infiniti I 20 hessitation on starts from stops after it's warm. I get a code for the knock sensor but have already replaced

  • Do you mean Infiniti I30? there is no I20.

    The P1105 code it's not common at all on the I30. You could start by checking the valve connections. If the valve connections are OK you should replace the valve.

  • Thank you, yes an I 30

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