P1119 Ford Code - Manifold Absolute Temperature Circuit High Input
Quick Answer
The P1119 Ford code indicates a problem with the Manifold Absolute Temperature (MAT) sensor circuit that is reporting a high input signal to the engine control module (ECM). Common causes include Faulty Manifold Absolute Temperature (MAT) sensor, Damaged wiring or connectors in the MAT sensor circuit, Malfunctioning Engine Control Module (ECM). 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
- P1119 Ford indicates Manifold Absolute Temperature Circuit High Input.
- Common causes
- Common causes include Faulty Manifold Absolute Temperature (MAT) sensor, Damaged wiring or connectors in the MAT sensor circuit, Malfunctioning Engine Control Module (ECM).
- 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 P1119 Ford Description
The P1119 Ford code indicates a problem with the Manifold Absolute Temperature (MAT) sensor circuit that is reporting a high input signal to the engine control module (ECM). The MAT sensor measures the temperature of the air entering the engine, which is crucial for determining the air-fuel mixture to optimize combustion. A high input signal indicates that the sensor is detecting a temperature that is higher than expected, which can lead to incorrect fuel delivery and affect engine performance.
Common Causes of P1119 Ford
- Faulty Manifold Absolute Temperature (MAT) sensor
- Damaged wiring or connectors in the MAT sensor circuit
- Malfunctioning Engine Control Module (ECM)
- Issues with the intake air temperature sensor
- Poor electrical connections or grounds
Symptoms of P1119 Ford
- Decreased fuel efficiency
- Rough idling or stalling
- Reduced engine power
- Check Engine Light illuminated
- Engine knocking or pinging noises
How to Fix P1119 Ford
- Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code and confirm the issue.
- Inspect the wiring and connectors in the MAT sensor circuit for any damage or corrosion. Repair or replace as necessary.
- Test the MAT sensor using a multimeter to ensure it is within the manufacturer's specified resistance values. Replace if faulty.
- Check the intake air temperature sensor for proper operation and replace if needed.
- Clear the trouble code from the ECM's memory and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1119 Ford
The cost of repairing a P1119 Ford code can vary depending on the specific cause of the issue. On average, you can expect to pay between $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's recommended to obtain a quote from a reputable mechanic in your area for a more accurate estimate.
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