P1105 – BMW DTC

BMW DTC P1105 – Differential Pressure Sensor Intake Manifold Pressure Too High (Bank 1)

DTC P1105 meaning on BMW

DTC P1105 on a BMW indicates that the Differential Pressure Sensor has detected that the intake manifold pressure is too high on Bank 1. This sensor is responsible for monitoring the pressure difference between the intake manifold and the atmosphere. When the pressure is higher than expected, it triggers this diagnostic trouble code.

BMW DTC P1105 symptoms

Symptoms of DTC P1105 on a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Engine stalling or rough idling
• Decreased fuel efficiency

BMW DTC P1105 causes

The common causes of DTC P1105 on a BMW include:

• Faulty Differential Pressure Sensor
• Intake manifold leaks
• Issues with the intake manifold pressure sensor circuit
• Problems with the engine’s air intake system

BMW DTC P1105 seriousness

While DTC P1105 may not cause immediate harm to the vehicle, it can lead to reduced engine performance and fuel efficiency. Ignoring this code may result in further damage to engine components over time.

How to diagnose DTC P1105 on BMW

To diagnose DTC P1105 on a BMW, you can follow these steps:

1. Use an OBD-II scanner to retrieve the fault codes.
2. Inspect the Differential Pressure Sensor for any visible damage or signs of malfunction.
3. Check for any leaks in the intake manifold or the intake system.
4. Test the sensor’s circuit for proper voltage and continuity.

How to fix DTC P1105 on BMW

To fix DTC P1105 on a BMW, you can try the following solutions:

1. Replace the Differential Pressure Sensor if it is faulty.
2. Repair any leaks in the intake manifold or intake system.
3. Clean or replace the air filter if necessary.
4. Ensure the sensor’s wiring and connections are secure and in good condition.

How to erase DTC P1105 on BMW

To erase DTC P1105 on a BMW, you can use an OBD-II scanner to clear the fault codes stored in the vehicle’s computer. Once the issue has been addressed and fixed, you can reset the codes to turn off the Check Engine Light.