AutoCodes – Acura – P1129 Acura

P1129 Acura Code - Manifold Absolute Pressure Sensor Circuit Higher Than Expected

Quick Answer

The Manifold Αbsolute Pressure (MΑP) sensor generates a signal that is proportional to the amount of vacuum in the intake manifold. Common causes include Faulty Manifold Absolute Pressure Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor 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: P1129 Acura indicates Manifold Absolute Pressure Sensor Circuit Higher Than Expected.
Common causes: Common causes include Faulty Manifold Absolute Pressure Sensor, Manifold Absolute Pressure Sensor harness is open or shorted, Manifold Absolute Pressure Sensor 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 16,724

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 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1129 Acura Description

The Manifold Αbsolute Pressure (MΑP) sensor generates a signal that is proportional to the amount of vacuum in the intake manifold. The signal is sent to the Engine Control Mudule (ECM) and the information is used to control the air/fuel mixture ratio. Faulty MΑP sensor can cuase the engine to stall, surge or a rough idle.

OBDII Code P1129 Acura - Manifold Absolute Pressure Sensor Circuit Higher Than Expected - AutoCodes.com — P1129 Acura Code - Manifold Absolute Pressure Sensor Circuit Higher Than Expected

What does this mean?

What are the Possible Causes of the DTC P1129 Acura?

Faulty Manifold Absolute Pressure Sensor
Manifold Absolute Pressure Sensor harness is open or shorted
Manifold Absolute Pressure Sensor circuit poor electrical connection

How to Fix the DTC P1129 Acura?

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 P1129 Acura 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 P1129 Acura code?

Need more information on how to fix the P1129 Acura code? Get Access to Factory Service Manuals

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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 P1129 Acura Code

1. What are the common symptoms of OBDII code P1129 in an Acura?

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

2. What could cause the Manifold Absolute Pressure Sensor Circuit to read higher than expected in an Acura?

- Potential causes include a faulty MAP sensor, a vacuum leak, a clogged air filter, or issues with the intake manifold.

3. How can I diagnose the issue related to the P1129 code in my Acura?

- Start by checking the MAP sensor's wiring and connectors, inspecting the intake system for leaks, and ensuring the air filter is clean and free of debris.

4. Can a dirty throttle body contribute to the P1129 fault code in an Acura?

- Yes, a dirty throttle body can disrupt airflow and cause incorrect readings from the MAP sensor, potentially triggering the P1129 code.

5. Is it safe to continue driving my Acura with the P1129 code present?

- It is not recommended to drive your vehicle with the P1129 code active, as it can lead to further engine damage and potentially unsafe driving conditions.

6. How can I reset the P1129 code in my Acura after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the system's memory.

7. Will replacing the MAP sensor fix the P1129 code issue in my Acura?

- While replacing the MAP sensor is a common solution for this code, it's important to diagnose the root cause first to ensure the issue is fully resolved.

8. Can a dealership or mechanic help me diagnose and repair the P1129 code in my Acura?

- Yes, a professional mechanic or dealership technician with experience in Acura vehicles can efficiently diagnose and repair issues related to the P1129 code.

9. How much does it typically cost to repair the P1129 code in an Acura?

- The cost of repairs can vary depending on the specific issue causing the P1129 code, but it's advisable to budget for potential sensor replacements, intake system repairs, or vacuum leak fixes.

10. Are there any preventative maintenance tips to avoid encountering the P1129 code in the future?

- Regularly inspecting and maintaining your Acura's air intake system, including the MAP sensor, air filter, and vacuum lines, can help prevent issues that may trigger the P1129 fault code.