P1105 – Infiniti DTC

Infiniti DTC P1105 – MAP/BARO Switch Solenoid Valve

DTC P1105 meaning on Infiniti

DTC P1105 on an Infiniti refers to an issue with the MAP/BARO Switch Solenoid Valve circuit. This diagnostic trouble code indicates a malfunction in the solenoid valve that controls the switching between the Manifold Absolute Pressure (MAP) sensor and the Barometric (BARO) sensor.

Infiniti DTC P1105 symptoms

• Check Engine Light (CEL) illuminated on the dashboard
• Decreased engine performance
• Reduced fuel efficiency
• Engine stalling or rough idling

Infiniti DTC P1105 causes

• Faulty MAP/BARO Switch Solenoid Valve
• Wiring issues in the solenoid valve circuit
• Corrosion or poor connections in the electrical system

Infiniti DTC P1105 seriousness

The seriousness of DTC P1105 on an Infiniti can vary. While the vehicle may still be operable with this issue, it can lead to poor engine performance and reduced fuel efficiency. Ignoring this code may result in further damage to engine components over time.

How to diagnose DTC P1105 on Infiniti

To diagnose DTC P1105 on an Infiniti, a mechanic would typically:

1. Use a diagnostic scanner to retrieve the trouble codes
2. Inspect the MAP/BARO Switch Solenoid Valve and its wiring for any visible damage
3. Test the solenoid valve for proper operation
4. Check the electrical connections and wiring for continuity and proper voltage

How to fix DTC P1105 on Infiniti

1. Replace the faulty MAP/BARO Switch Solenoid Valve
2. Repair any damaged wiring or connections in the circuit
3. Clear the trouble codes from the vehicle’s computer
4. Perform a test drive to ensure the issue has been resolved

How to erase DTC P1105 on Infiniti

To erase DTC P1105 on an Infiniti:

1. Use a diagnostic scanner to access the vehicle’s onboard computer
2. Select the option to clear the trouble codes
3. Follow the prompts on the scanner to confirm the deletion of the code
4. Turn off the ignition and restart the vehicle to ensure the code has been successfully erased

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