P112A – BMW DTC

BMW DTC P112A – Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible

DTC P112A meaning on BMW

DTC P112A is a diagnostic trouble code that indicates an issue with the Engine Coolant Temperature Sensor 1 in a BMW vehicle. This code specifically points to the sensor reporting a maximum temperature that is deemed implausible by the engine control module.

BMW DTC P112A symptoms

Symptoms of DTC P112A in a BMW may include:

• Check Engine Light illuminated
• Engine running hotter than normal
• Possible engine overheating
• Decreased fuel efficiency

BMW DTC P112A causes

Common causes of DTC P112A in a BMW include:

• Defective Engine Coolant Temperature Sensor
• Wiring or connector issues in the sensor circuit
• Engine control module (ECM) software glitch

BMW DTC P112A seriousness

The seriousness of DTC P112A lies in the potential for engine overheating and damage if the issue is not addressed promptly. Ignoring this code can lead to costly repairs and potential engine failure.

How to diagnose DTC P112A on BMW

To diagnose DTC P112A on a BMW, you can follow these steps:

1. Use an OBD-II scanner to retrieve the fault codes.
2. Inspect the Engine Coolant Temperature Sensor and its wiring for any visible damage.
3. Check the coolant level and system for proper operation.
4. Perform a resistance test on the sensor to determine if it is functioning correctly.

How to fix DTC P112A on BMW

To fix DTC P112A on a BMW, you can try the following:

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. Clear the fault codes and monitor the system for any reoccurrence.

How to erase DTC P112A on BMW

To erase DTC P112A on a BMW, you can:

1. Use an OBD-II scanner to clear the fault codes.
2. Ensure that the underlying issue causing the fault code has been addressed.
3. Perform a test drive to verify that the code does not return.

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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