P1805 Infiniti Code - Stop Lamp Switch
Quick Answer
The brake switch signal is applied to the Engine Control Module (ECM) through the stop lamp switch when the brake pedal is depressed. Common causes include Faulty Stop Lamp Switch, Stop Lamp Switch harness is open or shorted, Stop Lamp Switch circuit poor electrical connection. 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, Stop Lamp Switch harness is open or shorted, Stop Lamp Switch circuit poor electrical connection.
- 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.
Code P1805 Infiniti Description
What are the Possible Causes of the DTC P1805 Infiniti?
- Faulty Stop Lamp Switch
- Stop Lamp Switch harness is open or shorted
- Stop Lamp Switch circuit poor electrical connection
How to Fix the DTC P1805 Infiniti?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1805 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1805 Infiniti code?
Need more information on how to fix the P1805 Infiniti code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1805 Infiniti code diagnosed by a professional: Find a repair shop in your area
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.
Discuss the causes and fixes for P1805 Infiniti OBDII Code
Code P1805 Infiniti 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.
