AutoCodes – BMW – P112A BMW

P112A BMW Code - Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible

Quick Answer

The Engine Control Module (ECM) monitors the Engine Coolant Temperature Sensor signal. Common causes include Low engine coolant, Faulty Thermostat, Faulty Engine Coolant Temperature Sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P112A BMW indicates Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible.
Common causes: Common causes include Low engine coolant, Faulty Thermostat, Faulty Engine Coolant Temperature Sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,007

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P112A BMW Description

The Engine Control Module (ECM) monitors the Engine Coolant Temperature Sensor signal. The ECM sets the OBDII code when the Engine Coolant Temperature Sensor is out of factory specifications.

OBDII Code P112A BMW - Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible - AutoCodes.com — P112A BMW Code - Engine Coolant Temperature Sensor 1 Maximum Temperature Implausible

What does this mean?

What are the Possible Causes of the DTC P112A BMW?

Low engine coolant
Faulty Thermostat
Faulty Engine Coolant Temperature Sensor
Engine Coolant Temperature Sensor harness is open or shorted
Engine Coolant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P112A BMW?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P112A BMW code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P112A BMW code?

Need more information on how to fix the P112A BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P112A BMW code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P112A BMW Code

What does the OBDII code P112A mean on a BMW?

P112A indicates that the Engine Coolant Temperature Sensor 1 has reported a maximum temperature reading that is implausible, suggesting a potential issue with the sensor or its related systems.

What are the common symptoms of the P112A code on a BMW?

Symptoms may include engine overheating, poor fuel efficiency, erratic temperature gauge readings, and the Check Engine Light illuminating.

What causes the P112A code to appear on a BMW?

Common causes include a faulty coolant temperature sensor, damaged wiring or connectors, cooling system issues, or a malfunctioning engine control module (ECM).

Can a P112A code cause serious engine damage?

Yes, if left unresolved, an inaccurate coolant temperature reading can lead to overheating and potential engine damage. Addressing the issue promptly is crucial.

How do you diagnose the P112A code on a BMW?

Diagnosis involves using a scan tool to confirm the code, inspecting the coolant temperature sensor and its wiring, checking for coolant leaks, and verifying actual coolant temperatures.

Can you drive a BMW with the P112A code?

Driving with this code is not recommended, as it may lead to overheating or other performance issues. Get the problem diagnosed and repaired as soon as possible.

How do you fix the P112A code on a BMW?

Repairs may involve replacing the coolant temperature sensor, repairing damaged wiring, addressing cooling system problems, or reprogramming the ECM if necessary.

What tools are required to fix the P112A code on a BMW?

A diagnostic scan tool, multimeter for electrical testing, and basic hand tools are usually required. In some cases, specialized BMW diagnostic software may also be needed.

How much does it cost to repair the P112A code on a BMW?

Repair costs vary depending on the issue. Replacing a coolant temperature sensor typically costs between $100 and $300, including parts and labor.

Can a software update fix the P112A code on a BMW?

In some cases, a software update for the ECM may resolve the issue if the problem is related to a programming error. Consult a BMW specialist to determine if this applies.