AutoCodes – Infiniti – P1104 Infiniti

P1104 Infiniti Code - MAP Sensor Low Voltage

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: P1104 Infiniti indicates MAP Sensor Low Voltage.
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 1,693

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1104 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 P1104 Infiniti - MAP Sensor Low Voltage - AutoCodes.com — P1104 Infiniti Code - MAP Sensor Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1104 Infiniti?

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 P1104 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 P1104 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 P1104 Infiniti code?

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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 P1104 Infiniti Code

1. What does the OBDII code P1104 mean on an Infiniti?

P1104 indicates a low voltage issue with the Manifold Absolute Pressure (MAP) sensor on an Infiniti vehicle.

2. What are the common symptoms of code P1104 in an Infiniti?

Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting, rough idling, and an illuminated Check Engine Light.

3. What causes the P1104 code to appear in an Infiniti?

Common causes include a faulty MAP sensor, damaged wiring or connectors, a vacuum leak, or issues with the vehicle's powertrain control module (PCM).

4. Can a dirty MAP sensor trigger code P1104?

Yes, a dirty or clogged MAP sensor can cause inaccurate readings and lead to the low voltage error associated with P1104.

5. How do you diagnose the P1104 code in an Infiniti?

Diagnosis involves using a scan tool to confirm the code, inspecting the MAP sensor and its wiring, checking for vacuum leaks, and testing the sensor's voltage output.

6. Can I drive my Infiniti with the P1104 code active?

Driving with the P1104 code can lead to decreased engine performance and potentially damage other components; it’s best to address the issue promptly.

7. How do you fix the P1104 code on an Infiniti?

Repairs may include replacing the MAP sensor, repairing damaged wiring, fixing vacuum leaks, or reprogramming the PCM if necessary.

8. How much does it cost to fix the P1104 code on an Infiniti?

The cost varies but typically ranges from $100 to $300 for parts and labor, depending on whether the MAP sensor or wiring needs replacement.

9. Can a vacuum leak cause the P1104 code in an Infiniti?

Yes, a vacuum leak can disrupt the MAP sensor's readings and result in a low voltage error.

10. How can I prevent the P1104 code from recurring in my Infiniti?

Regular maintenance, cleaning or replacing the MAP sensor as needed, and inspecting wiring and vacuum lines can help prevent this code from reappearing.