The automobile fault code P1129 indicates a problem with the Manifold Absolute Pressure (MAP) Sensor. This can cause symptoms such as the engine light being on, difficulty starting the engine, and a rough or erratic idle speed. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

It is also important to look for any broken, bent, pushed out, or corroded pins in the connectors. The repair for this fault code typically takes around 1.0 hour. By addressing this issue promptly, you can ensure optimal engine performance and avoid further complications.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

Experiencing an illuminated engine light, difficulty starting the engine, and a rough or erratic idle speed? These symptoms could be indicative of the automobile fault code: p1129.

  • The symptoms of the automobile fault code p1129 include the engine light being ON (or Service Engine Soon Warning Light), difficulty in starting the engine, and a rough or erratic idle speed.

The automobile fault code p1129 can be caused by a faulty Manifold Absolute Pressure Sensor, an open or shorted harness, or a poor electrical connection in the sensor circuit.

  • The fault code P1129 can be caused by the following: a faulty Manifold Absolute Pressure Sensor, an open or shorted harness for the Manifold Absolute Pressure Sensor, and a poor electrical connection in the Manifold Absolute Pressure Sensor circuit.

To fix the p1129 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1129, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p1129 are the estimated repair time of 1.0 hour and the typical auto repair shop charges of $75 to $150 per hour.

The P1129 fault code refers to the Manifold Absolute Pressure (MAP) sensor in your automobile.

This sensor measures the vacuum in the intake manifold and sends a signal to the Engine Control Module (ECM). The ECM uses this information to regulate the airfuel mixture ratio. If the MAP sensor is faulty, it can cause various issues with your engine.

These include stalling, surging, or a rough idle.

It is important to address this fault code promptly to ensure optimal engine performance. Additionally, the P1129 code may indicate that the downstream oxygen sensors have been swapped from bank to bank.

This can lead to incorrect readings and affect the overall performance of your vehicle. It is crucial to have this issue resolved to maintain proper fuel efficiency and reduce emissions.

What are the symptoms of the automobile fault code p1129?

If you’re experiencing the P1129 fault code, you might notice that your engine light is on or that the service engine soon warning light is illuminated. Starting your engine might become a bit of a challenge, and you may also experience a rough or erratic idle speed. These symptoms could be caused by a faulty manifold absolute pressure sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit. To fix the issue, it’s recommended to visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded pins in the connectors.

What are the possible causes of the p1129 fault code?

If you’re experiencing an engine light that’s constantly on, difficulty starting your engine, or a rough and erratic idle speed, the p1129 fault code might be the culprit. This code is often caused by a faulty Manifold Absolute Pressure Sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit. To fix this issue, it’s important to visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, be sure to look out for broken, bent, pushed out, or corroded pins in the connectors.

How can the p1129 fault code be fixed?

To fix the p1129 fault code, start by checking the possible causes mentioned above. Then, visually inspect the wiring harness and connectors related to the Manifold Absolute Pressure Sensor. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This will help identify any issues with the sensor or its circuit connection, allowing for the necessary repairs to be made.

p1129 error fault code explained

If you’re experiencing a rough idle, difficulty starting your engine, or the engine light is on, it could be due to a faulty Manifold Absolute Pressure Sensor or issues with the sensor’s wiring. To fix this, visually inspect the wiring harness and connectors for any damage, and check for broken or corroded pins.

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