P1805 Infiniti Code - Stop Lamp Switch
Quick Answer
The P1805 Infiniti code refers to an issue with the stop lamp switch in the vehicle. Common causes include Faulty stop lamp switch, Wiring issues or a short circuit in the stop lamp switch circuit, Corrosion or damage to the 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
- P1805 Infiniti indicates Stop Lamp Switch.
- Common causes
- Common causes include Faulty stop lamp switch, Wiring issues or a short circuit in the stop lamp switch circuit, Corrosion or damage to the 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 P1805 Infiniti Description
The P1805 Infiniti code refers to an issue with the stop lamp switch in the vehicle. The stop lamp switch is a crucial component that is responsible for activating the brake lights when the brake pedal is pressed. When this switch malfunctions, it can lead to various safety concerns and affect the overall performance of the vehicle.
Common Causes of P1805 Infiniti
- Faulty stop lamp switch.
- Wiring issues or a short circuit in the stop lamp switch circuit.
- Corrosion or damage to the electrical connectors.
- Malfunctioning brake light bulbs.
- Issues with the brake pedal position sensor.
Symptoms of P1805 Infiniti
- Brake lights not turning on when the brake pedal is pressed.
- Inability to shift out of park without manually overriding the interlock system.
- Dashboard warning light indicating an issue with the brake system.
- Vehicle not starting due to interlock system issues.
- Erratic behavior of the brake lights, such as flickering or staying on constantly.
How to Fix P1805 Infiniti
- Begin by locating the stop lamp switch, which is typically located near the brake pedal.
- Disconnect the electrical connector from the stop lamp switch.
- Remove the old stop lamp switch and replace it with a new, compatible one.
- Reconnect the electrical connector and test the brake lights to ensure they are functioning properly.
- Clear the diagnostic trouble codes from the vehicle's computer to reset the system.
Cost to Fix P1805 Infiniti
The cost of repairing a P1805 Infiniti code related to the stop lamp switch can vary depending on the vehicle make and model, as well as the location and labor rates of the auto repair shop. On average, the cost of parts for a stop lamp switch replacement can range from $50 to $150. Labor costs can range from $80 to $150 per hour, and the total repair cost is usually between $150 and $300. It is advisable to contact local auto repair shops for a more accurate estimate based on your specific vehicle and location.
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Information for Specific Infiniti Models
- P1805 2003 Infiniti G35 — Stop Lamp Switch
- P1805 2004 Infiniti G35 — Stop Lamp Switch
- P1805 2005 Infiniti G35 — Stop Lamp Switch
- P1805 2006 Infiniti G35 — Stop Lamp Switch
Frequently Asked Questions about P1805 Infiniti Code
1. What does the OBDII code P1805 mean for an Infiniti?
P1805 indicates an issue with the stop lamp switch circuit, which is responsible for detecting brake pedal usage and sending signals to the vehicle’s systems.
2. What are the common symptoms of code P1805 in an Infiniti?
Symptoms may include the brake lights not working, the engine not starting, the cruise control being inoperative, or the Check Engine Light being illuminated.
3. What causes the P1805 code to appear in an Infiniti?
Common causes include a faulty stop lamp switch, damaged wiring or connectors in the stop lamp circuit, or a blown fuse related to the brake light system.
4. Can I drive my Infiniti with a P1805 code?
Driving is not recommended if the brake lights are not working, as it poses a safety risk. Address the issue promptly to avoid accidents or further complications.
5. How can I diagnose the P1805 code on my Infiniti?
Start by inspecting the stop lamp switch, brake light bulbs, and related fuses for damage, and check the wiring and connectors for signs of corrosion or disconnection.
6. How do I fix the P1805 code in an Infiniti?
Repairs may involve replacing the stop lamp switch, repairing or replacing damaged wiring, or replacing a blown fuse. Ensure all connections are secure.
7. What tools are needed to troubleshoot the P1805 code?
You’ll need a digital multimeter to test the circuit, a scan tool to reset the code, and possibly basic tools to access and replace the stop lamp switch.
8. How much does it cost to repair the P1805 code in an Infiniti?
The cost varies but typically ranges from $50 to $150 for parts and labor, depending on whether the stop lamp switch needs replacement or wiring requires repair.
9. Can a faulty stop lamp switch cause other problems in an Infiniti?
Yes, it can affect the cruise control system, transmission operation, or even prevent the vehicle from starting if the switch signal is not recognized.
10. How can I prevent the P1805 code from recurring?
Regularly inspect and maintain the brake light system, ensure the stop lamp switch is adjusted correctly, and address any electrical issues promptly.
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