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P1104 Infiniti Code - MAP Sensor Low Voltage

Quick Answer

The P1104 code for Infiniti vehicles indicates a low voltage condition in the MAP (Manifold Absolute Pressure) sensor circuit. Common causes include Faulty MAP sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leaks in the intake manifold. 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 MAP sensor, Damaged wiring or connectors in the sensor circuit, Vacuum leaks in the intake manifold.
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 10, 2024
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Code P1104 Infiniti Description

The P1104 code for Infiniti vehicles indicates a low voltage condition in the MAP (Manifold Absolute Pressure) sensor circuit. The MAP sensor plays a crucial role in monitoring the pressure within the intake manifold, providing vital information to the engine control unit (ECU) to regulate fuel injection and ignition timing. When the voltage from the MAP sensor falls below the expected range, it can lead to improper fuel mixture, affecting the engine's performance and efficiency.

OBDII Code P1104 Infiniti - MAP Sensor Low Voltage
P1104 Infiniti Code - MAP Sensor Low Voltage

Common Causes of P1104 Infiniti

  1. Faulty MAP sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Vacuum leaks in the intake manifold
  4. ECU malfunction
  5. Clogged or dirty MAP sensor

Symptoms of P1104 Infiniti

  1. Check Engine Light illuminated on the dashboard
  2. Reduced engine power
  3. Poor fuel economy
  4. Rough idling or stalling
  5. Increased emissions

How to Fix P1104 Infiniti

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the trouble codes and confirm that P1104 is related to the MAP sensor low voltage.
  2. Inspect the wiring and connectors in the MAP sensor circuit for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the MAP sensor using a multimeter to ensure it is within the manufacturer's specified voltage range. Replace the sensor if it is faulty.
  4. Check for any vacuum leaks in the intake manifold that may be affecting the MAP sensor readings.
  5. Clear the trouble codes from the ECU memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1104 Infiniti

The typical repair costs for addressing a P1104 code in an Infiniti vehicle can range from $100 to $300, including parts and labor. However, it's important to note that the actual cost can vary depending on the specific diagnosis time and labor rates at auto repair shops. Factors such as the vehicle's make and model, engine type, and location can also influence the overall cost. It's advisable to consult with local auto repair shops to obtain a more accurate estimate for this repair.

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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.

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