P1112 – BMW DTC

BMW DTC P1112 – Engine Coolant Temperature Sensor Radiator Outlet Circuit High

DTC P1112 meaning on BMW

The DTC P1112 on a BMW indicates an issue with the Engine Coolant Temperature Sensor Radiator Outlet Circuit registering a high voltage signal. This sensor is responsible for monitoring the temperature of the engine coolant as it flows out of the radiator.

BMW DTC P1112 symptoms

Symptoms of the DTC P1112 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Inaccurate temperature readings on the coolant gauge
• Engine running hotter or colder than normal
• Potential decrease in fuel efficiency

BMW DTC P1112 causes

Common causes of the DTC P1112 on a BMW include:

• Faulty Engine Coolant Temperature Sensor
• Wiring or connector issues in the sensor circuit
• Coolant leaks affecting sensor readings

BMW DTC P1112 seriousness

While the DTC P1112 may not cause immediate drivability issues, it is important to address this problem promptly to prevent potential engine damage due to incorrect temperature readings.

How to diagnose DTC P1112 on BMW

To diagnose the DTC P1112 on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the fault code and freeze frame data
2. Inspect the Engine Coolant Temperature Sensor and its wiring for any visible damage
3. Check the coolant level and condition to ensure proper sensor operation
4. Perform a resistance test on the sensor to determine its functionality

How to fix DTC P1112 on BMW

To fix the DTC P1112 on a BMW, you can try the following solutions:

1. Replace the Engine Coolant Temperature Sensor if it is found to be faulty
2. Repair any damaged wiring or connectors in the sensor circuit
3. Ensure the coolant system is properly filled and free of leaks
4. Clear the fault code and monitor the system for any reoccurrence

How to erase DTC P1112 on BMW

To erase the DTC P1112 on a BMW, you can use an OBD-II scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue and making necessary repairs, clearing the code will reset the Check Engine Light and allow for monitoring of the system for any new faults.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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