P1112 – Infiniti DTC

Infiniti DTC P1112 – IAT Sensor Circuit Intermittent Voltage Low

DTC P1112 meaning on Infiniti

DTC P1112 on an Infiniti indicates an Intake Air Temperature (IAT) Sensor Circuit Intermittent Voltage Low condition. This means that the powertrain control module (PCM) has detected a low voltage signal from the IAT sensor that is inconsistent or intermittent.

Infiniti DTC P1112 symptoms

• Check Engine Light (CEL) illuminated on the dashboard
• Decreased engine performance or rough idling
• Potential decrease in fuel efficiency

Infiniti DTC P1112 causes

• Faulty or damaged IAT sensor
• Wiring or connector issues in the IAT sensor circuit
• Intermittent electrical connection problems

Infiniti DTC P1112 seriousness

The seriousness of DTC P1112 on an Infiniti depends on the driving conditions and the extent of the issue. While the vehicle may still be operable with this fault, it is important to address it promptly to prevent potential engine performance issues and further damage.

How to diagnose DTC P1112 on Infiniti

1. Use an OBD-II scanner to retrieve the specific DTC code and freeze frame data
2. Inspect the IAT sensor and its wiring for any visible damage or corrosion
3. Check the connector for proper connection and signs of wear
4. Perform a continuity test on the sensor circuit to check for any open or short circuits

How to fix DTC P1112 on Infiniti

1. Replace the IAT sensor if it is found to be faulty
2. Repair or replace any damaged wiring or connectors in the IAT sensor circuit
3. Clear the DTC using an OBD-II scanner after the repair is completed
4. Perform a test drive to ensure the issue has been resolved

How to erase DTC P1112 on Infiniti

1. Connect an OBD-II scanner to the vehicle’s diagnostic port
2. Access the scanner’s menu to clear the DTC codes
3. Follow the on-screen prompts to erase the DTC P1112 code
4. Disconnect the scanner and start the vehicle to confirm the code has been cleared

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