AutoCodes – Generic – P1105

P1105 Code - Manifold Absolute Pressure Sensor Malfunction

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 (MAP), Manifold Absolute Pressure (MAP) harness is open or shorted, Manifold Absolute Pressure (MAP) circuit poor electrical connection. 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 indicates Manifold Absolute Pressure Sensor Malfunction.
Common causes
Common causes include Faulty Manifold Absolute Pressure (MAP), Manifold Absolute Pressure (MAP) harness is open or shorted, Manifold Absolute Pressure (MAP) circuit poor electrical connection.
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 40,534
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Apr 14, 2019
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Code P1105 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.
OBDII Code P1105 - Manifold Absolute Pressure Sensor Malfunction - AutoCodes.com
P1105 Code - Manifold Absolute Pressure Sensor Malfunction

What are the Possible Causes of the DTC P1105?

  • Faulty Manifold Absolute Pressure (MAP)
  • Manifold Absolute Pressure (MAP) harness is open or shorted
  • Manifold Absolute Pressure (MAP) circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P1105?

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 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 code?

Need more information on how to fix the P1105 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1105 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 Code

1. What are the common symptoms of a Manifold Absolute Pressure (MAP) sensor malfunction (OBDII code P1105)?

- Common symptoms include rough idle, engine hesitation, poor acceleration, and potential stalling.

2. What are the possible causes of a MAP sensor malfunction triggering OBDII code P1105?

- Causes may include a faulty MAP sensor, damaged or disconnected sensor wiring, or issues with the intake manifold.

3. How can I diagnose a Manifold Absolute Pressure sensor issue related to OBDII code P1105?

- Use a scan tool to read the OBDII trouble code, visually inspect the sensor and its wiring, and perform a voltage check on the sensor.

4. Can a dirty or clogged MAP sensor cause OBDII code P1105?

- Yes, a dirty or clogged MAP sensor can affect its readings and trigger code P1105. Cleaning or replacing the sensor may resolve the issue.

5. Are there any quick fixes or temporary solutions for OBDII code P1105 related to the MAP sensor?

- Resetting the ECU by disconnecting the battery for a few minutes may temporarily clear the code, but it's important to address the underlying issue.

6. Is it safe to continue driving with OBDII code P1105 indicating a Manifold Absolute Pressure sensor malfunction?

- It is not recommended to drive with a faulty MAP sensor as it can lead to poor engine performance and potential further damage if left unresolved.

7. Can a DIY enthusiast replace a faulty MAP sensor triggering OBDII code P1105?

- Yes, replacing a MAP sensor is typically a straightforward task that can be done by a DIY enthusiast with basic tools and some mechanical knowledge.

8. Will resetting the OBDII system clear code P1105 permanently if the underlying issue is not fixed?

- Resetting the system will clear the code temporarily, but if the root cause of the MAP sensor malfunction is not addressed, the code is likely to reappear.

9. What are the typical repair costs associated with fixing OBDII code P1105 related to a faulty Manifold Absolute Pressure sensor?

- Repair costs can vary depending on the cause of the issue, but replacing a MAP sensor can range from $50 to $200, including parts and labor.

10. How crucial is it to address OBDII code P1105 promptly to maintain vehicle performance and efficiency?

- Promptly addressing code P1105 is crucial to ensure optimal engine performance, fuel efficiency, and overall vehicle drivability.

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