P1806 Lincoln Code - Transmission 4-Wheel Drive High Indicator Short Circuit To Battery
Quick Answer
The P1806 diagnostic trouble code (DTC) for Lincoln vehicles indicates a transmission 4-wheel drive high indicator short circuit to battery. Common causes include Faulty 4-wheel drive high indicator switch, Short circuit in the wiring harness, Corrosion or damage to electrical connectors. 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
- P1806 Lincoln indicates Transmission 4-Wheel Drive High Indicator Short Circuit To Battery.
- Common causes
- Common causes include Faulty 4-wheel drive high indicator switch, Short circuit in the wiring harness, Corrosion or damage to electrical connectors.
- 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 P1806 Lincoln Description
The P1806 diagnostic trouble code (DTC) for Lincoln vehicles indicates a transmission 4-wheel drive high indicator short circuit to battery. This means that there is an electrical issue in the circuit that controls the 4-wheel drive high indicator, causing it to short circuit to the vehicle's battery. The 4-wheel drive high indicator is responsible for signaling the driver when the vehicle is in 4-wheel drive high mode. When this circuit malfunctions, it can lead to incorrect or no indication of the vehicle's current drive mode, potentially causing confusion for the driver.
Common Causes of P1806 Lincoln
- Faulty 4-wheel drive high indicator switch
- Short circuit in the wiring harness
- Corrosion or damage to electrical connectors
- Faulty body control module (BCM)
- Water intrusion into the circuit
Symptoms of P1806 Lincoln
- 4-wheel drive high indicator not functioning
- Incorrect indication of drive mode on the dashboard
- Battery draining quickly
- Starting issues or no-start condition
How to Fix P1806 Lincoln
- Begin by conducting a thorough inspection of the 4-wheel drive high indicator circuit, including the switch, wiring harness, connectors, and BCM.
- Test the 4-wheel drive high indicator switch for proper operation and replace if necessary.
- Inspect the wiring harness for any signs of damage, corrosion, or short circuits, and repair or replace as needed.
- Check the electrical connectors for proper connection and corrosion, cleaning or replacing them as necessary.
- If the issue persists, test the BCM for proper function and replace if found to be faulty.
Cost to Fix P1806 Lincoln
The typical repair costs for addressing a P1806 DTC in a Lincoln vehicle can range from $150 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that the actual cost may vary based on the location of the repair shop, the vehicle's make and model, and the type of engine. Additionally, diagnosis time and labor rates can vary, with most shops charging between $80 and $150 per hour. It is recommended to obtain quotes from local repair shops for a more accurate estimate.
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