P1112 Mercury Code - Intake Air Temperature Sensor Intermittent Condition
Quick Answer
The P1112 diagnostic trouble code (DTC) for Mercury vehicles indicates an intermittent condition with the Intake Air Temperature (IAT) sensor. Common causes include Faulty IAT sensor, Wiring harness issues, Poor electrical connections. 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
- P1112 Mercury indicates Intake Air Temperature Sensor Intermittent Condition.
- Common causes
- Common causes include Faulty IAT sensor, Wiring harness issues, Poor electrical connections.
- 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 P1112 Mercury Description
The P1112 diagnostic trouble code (DTC) for Mercury vehicles indicates an intermittent condition with the Intake Air Temperature (IAT) sensor. The IAT sensor is a crucial component of the vehicle's engine management system, as it measures the temperature of the air entering the engine. This information is used by the engine control module (ECM) to adjust the air-to-fuel ratio for optimal combustion efficiency. An intermittent condition with the IAT sensor means that the sensor is sending inconsistent or incorrect temperature readings to the ECM, which can lead to a variety of performance issues.
Common Causes of P1112 Mercury
- Faulty IAT sensor
- Wiring harness issues
- Poor electrical connections
- Environmental factors affecting sensor performance
Symptoms of P1112 Mercury
- Decreased fuel efficiency
- Engine hesitation or rough idling
- Stalling or difficulty starting
- Check Engine Light illuminated
How to Fix P1112 Mercury
- Begin by locating the IAT sensor, typically located near the intake manifold or air filter housing.
- Inspect the sensor and wiring harness for any visible damage or corrosion.
- Test the sensor using a multimeter to check for proper resistance and voltage readings.
- If the sensor is faulty, replace it with a new OEM or aftermarket sensor.
- Clear the DTC using a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1112 Mercury
The cost of repairing an intermittent condition with the IAT sensor can vary depending on the extent of the issue and the specific vehicle model. On average, the cost of a new IAT sensor ranges from $20 to $50, while labor costs can range from $80 to $150 per hour. Overall, the total repair cost for this issue may range from $100 to $300, including parts and labor. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's specific needs and location.
Tech Notes for P1112 Mercury
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