P1804 Lincoln Code - Transmission 4-Wheel Drive High Indicator Circuit Failure
Quick Answer
The P1804 diagnostic trouble code for Lincoln vehicles indicates a Transmission 4-Wheel Drive High Indicator Circuit Failure. Common causes include Faulty 4-wheel drive high indicator switch, Wiring or electrical connection issues in the indicator circuit, Defective transmission control module. 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
- P1804 Lincoln indicates Transmission 4-Wheel Drive High Indicator Circuit Failure.
- Common causes
- Common causes include Faulty 4-wheel drive high indicator switch, Wiring or electrical connection issues in the indicator circuit, Defective transmission control module.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1804 Lincoln Description
The P1804 diagnostic trouble code for Lincoln vehicles indicates a Transmission 4-Wheel Drive High Indicator Circuit Failure. This code is specifically related to the indicator circuit that controls the 4-wheel drive high mode in the vehicle's transmission system. When this circuit fails, it can lead to issues with engaging or disengaging the 4-wheel drive high mode, potentially affecting the vehicle's performance and drivability.
Common Causes of P1804 Lincoln
- Faulty 4-wheel drive high indicator switch
- Wiring or electrical connection issues in the indicator circuit
- Defective transmission control module
- Corrosion or damage to the indicator circuit components
- Water intrusion or moisture damage in the transmission system
Symptoms of P1804 Lincoln
- Illumination of the 4-wheel drive high indicator light on the dashboard
- Difficulty engaging or disengaging the 4-wheel drive high mode
- Inaccurate or inconsistent readings from the 4-wheel drive high indicator
- Loss of traction or stability in off-road or slippery road conditions
- Transmission shifting issues or abnormal noises while driving
How to Fix P1804 Lincoln
- Begin by diagnosing the specific cause of the P1804 code using a diagnostic scanner to pinpoint the faulty component.
- Inspect the 4-wheel drive high indicator switch and wiring for any visible damage or corrosion, replacing any faulty components as needed.
- Test the transmission control module for proper functionality and replace if necessary.
- Check for any water intrusion or moisture damage in the transmission system, addressing any leaks or sealing issues.
- Clear the trouble code from the vehicle's computer system and test the 4-wheel drive high mode to ensure proper operation.
Cost to Fix P1804 Lincoln
The typical repair costs for addressing a Transmission 4-Wheel Drive High Indicator Circuit Failure can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the parts and labor for this repair can range from $200 to $500. However, it's important to note that 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 recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances.
Need more information about the P1804 Lincoln code?
Need more information on how to fix the P1804 Lincoln code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1804 Lincoln code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1804 Lincoln Code
No Frequently Asked Questions about P1804 Lincoln Code found.
Discuss the causes and fixes for P1804 Lincoln OBDII Code
Code P1804 Lincoln comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.