P1246 Mercury Code - Alternator Load Input Failed
Quick Answer
The P1246 diagnostic trouble code (DTC) for Mercury vehicles indicates that the alternator load input has failed. Common causes include Faulty alternator load input sensor, Loose or corroded electrical connections, Faulty alternator. 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
- P1246 Mercury indicates Alternator Load Input Failed.
- Common causes
- Common causes include Faulty alternator load input sensor, Loose or corroded electrical connections, Faulty alternator.
- 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 P1246 Mercury Description
The P1246 diagnostic trouble code (DTC) for Mercury vehicles indicates that the alternator load input has failed. The alternator is a crucial component of the vehicle's electrical system, responsible for generating power to charge the battery and supply electricity to various electrical components while the engine is running. The alternator load input is a sensor that monitors the electrical load on the alternator to ensure it is functioning properly and efficiently.
Common Causes of P1246 Mercury
- Faulty alternator load input sensor
- Loose or corroded electrical connections
- Faulty alternator
- Wiring issues
- Battery not holding a charge
Symptoms of P1246 Mercury
- Dim or flickering lights on the dashboard
- Difficulty starting the vehicle
- Electrical components operating erratically
- Stalling while driving
- Battery draining quickly
How to Fix P1246 Mercury
- Begin by diagnosing the alternator load input sensor and related electrical connections for any faults.
- Test the alternator to ensure it is functioning properly and generating sufficient power.
- Check the wiring harness for any signs of damage or corrosion and repair or replace as necessary.
- If the alternator or battery is found to be faulty, replace with a new unit.
- Clear the DTC with a diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1246 Mercury
The typical repair cost for addressing a P1246 alternator load input failure on a Mercury vehicle can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate.
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