P112B Code - Engine Coolant Temperature Too Low
Quick Answer
The diagnostic trouble code P112B indicates that the engine coolant temperature is too low. Common causes include Faulty engine coolant temperature sensor, Thermostat stuck open, Low coolant level. 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
- P112B indicates Engine Coolant Temperature Too Low.
- Common causes
- Common causes include Faulty engine coolant temperature sensor, Thermostat stuck open, Low coolant level.
- 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 P112B Description
The diagnostic trouble code P112B indicates that the engine coolant temperature is too low. The engine coolant temperature sensor is responsible for monitoring the temperature of the coolant in the engine. This information is crucial for the engine control module to adjust fuel injection, ignition timing, and other parameters to ensure optimal engine performance and efficiency. When the engine coolant temperature is too low, it can lead to a variety of issues that can impact the vehicle's performance and overall health.
Common Causes of P112B
- Faulty engine coolant temperature sensor
- Thermostat stuck open
- Low coolant level
- Cooling system malfunction
- Faulty engine control module
Symptoms of P112B
- Poor fuel economy
- Engine running rough or misfiring
- Check engine light illuminated
- Reduced engine power
- Engine stalling
How to Fix P112B
- Check the coolant level and top off if necessary.
- Inspect the thermostat and replace if it is stuck open.
- Test the engine coolant temperature sensor and replace if faulty.
- Inspect the cooling system for leaks or blockages and repair as needed.
- Reset the check engine light and monitor the engine coolant temperature to ensure it is within the correct range.
Cost to Fix P112B
The cost of repairing the P112B engine coolant temperature too low code can vary depending on the specific cause of the issue. In general, the cost of parts such as a new thermostat, engine coolant temperature sensor, or coolant may range from $50 to $200. Labor costs can vary but typically range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It's important to note that additional diagnostic time may be needed to pinpoint the exact cause of the issue, which can impact the overall repair cost.
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Code P112B Information for Specific Makes
- P112B BMW — Engine Coolant Temperature Too Low
- P112B Buick — Intake Air Temperature Sensor 3 Performance
- P112B Cadillac — Intake Air Temperature Sensor 3 Performance
- P112B Chevrolet — Intake Air Temperature Sensor 3 Performance
- P112B GMC — Intake Air Temperature Sensor 3 Performance
- P112B MINI — Engine Coolant Temperature Too Low
Frequently Asked Questions about P112B Code
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