P1807 Code - Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
Quick Answer
The P1807 diagnostic trouble code (DTC) indicates a transmission 4-wheel drive high indicator short circuit to ground in the vehicle's system. Common causes include Damaged wiring or connectors in the 4-wheel drive high indicator circuit, Faulty 4-wheel drive high indicator switch, Short circuit in the wiring harness. 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
- P1807 indicates Transmission 4-Wheel Drive High Indicator Short Circuit To Ground.
- Common causes
- Common causes include Damaged wiring or connectors in the 4-wheel drive high indicator circuit, Faulty 4-wheel drive high indicator switch, Short circuit in the wiring harness.
- 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 P1807 Description
The P1807 diagnostic trouble code (DTC) indicates a transmission 4-wheel drive high indicator short circuit to ground in the vehicle's system. This means that there is an electrical issue with the 4-wheel drive high indicator circuit, where the indicator is showing a short circuit to the ground. The 4-wheel drive high indicator is responsible for showing the driver whether the vehicle is in 4-wheel drive high mode, which is essential for off-road driving and rough terrain.
Common Causes of P1807
- Damaged wiring or connectors in the 4-wheel drive high indicator circuit
- Faulty 4-wheel drive high indicator switch
- Short circuit in the wiring harness
- Corrosion or moisture in the electrical connections
- Internal transmission control module (TCM) malfunction
Symptoms of P1807
- Erratic or incorrect readings on the 4-wheel drive high indicator
- Inability to engage or disengage 4-wheel drive high mode
- Transmission shifting issues
- Illumination of the check engine light
- Reduced fuel efficiency
How to Fix P1807
- Begin by conducting a visual inspection of the wiring and connectors in the 4-wheel drive high indicator circuit to check for any visible damage or corrosion.
- Test the 4-wheel drive high indicator switch using a multimeter to determine if it is functioning correctly.
- Check the wiring harness for any shorts or breaks and repair or replace as necessary.
- Inspect the TCM for any faults or malfunctions and reprogram or replace if needed.
- Clear the DTC from the vehicle's system and test drive to ensure the issue has been resolved.
Cost to Fix P1807
The typical repair costs for resolving a transmission 4-wheel drive high indicator short circuit to ground issue can range from $200 to $500, depending on the extent of the damage and the specific components that need to be repaired or replaced. This estimate includes parts and labor, but the actual cost may vary based on factors such as the vehicle make and model, the location of the repair shop, and the expertise of the technician. It is recommended to consult with a professional mechanic to get an accurate quote for this repair.
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Code P1807 Information for Specific Makes
- P1807 Ford — Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
- P1807 Infiniti — Vehicle Speed Sensor A/T
- P1807 Lincoln — Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
- P1807 Mercury — Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
- P1807 Nissan — Vehicle Speed Sensor A/T
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