AutoCodes – Generic – P1808

P1808 Code - Transmission 4-Wheel Drive Low Indicator Circuit Failure

Quick Answer

P1808 indicates Transmission 4-Wheel Drive Low Indicator Circuit Failure. Common causes include Faulty Transmission 4-Wheel Drive Low Indicator, Transmission 4-Wheel Drive Low Indicator harness is open or shorted, Transmission 4-Wheel Drive Low Indicator 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: P1808 indicates Transmission 4-Wheel Drive Low Indicator Circuit Failure.
Common causes: Common causes include Faulty Transmission 4-Wheel Drive Low Indicator, Transmission 4-Wheel Drive Low Indicator harness is open or shorted, Transmission 4-Wheel Drive Low Indicator 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.

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Code Popularity 33,326

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1808 Description

OBDII Code P1808 - Transmission 4-Wheel Drive Low Indicator Circuit Failure - AutoCodes.com — P1808 Code - Transmission 4-Wheel Drive Low Indicator Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P1808?

Faulty Transmission 4-Wheel Drive Low Indicator
Transmission 4-Wheel Drive Low Indicator harness is open or shorted
Transmission 4-Wheel Drive Low Indicator circuit poor electrical connection

How to Fix the DTC P1808?

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 P1808 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 P1808 code?

Need more information on how to fix the P1808 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1808 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1808 Ford — Transmission 4-Wheel Drive Low Indicator Circuit Failure
P1808 Infiniti — Vehicle Speed Sensor ABS
P1808 Lincoln — Transmission 4-Wheel Drive Low Indicator Circuit Failure
P1808 Mercury — Transmission 4-Wheel Drive Low Indicator Circuit Failure
P1808 Nissan — Vehicle Speed Sensor ABS

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1808 Code

1. What are common symptoms of OBDII code P1808 (Transmission 4-Wheel Drive Low Indicator Circuit Failure)?

- Common symptoms include the 4-wheel drive low indicator not functioning properly, an illuminated check engine light, and potential issues with engaging 4-wheel drive low mode.

2. What can cause OBDII code P1808 to trigger?

- The code P1808 can be triggered by a faulty 4-wheel drive low indicator switch, wiring issues in the indicator circuit, or a malfunctioning transfer case control module.

3. How serious is OBDII code P1808?

- While the code itself may not affect the drivability of the vehicle, it can lead to issues with engaging 4-wheel drive low mode, which may impact off-road performance and traction in certain driving conditions.

4. How can I diagnose the cause of OBDII code P1808?

- Diagnosing the cause of P1808 typically involves checking the 4-wheel drive low indicator switch, inspecting the wiring for any damage or loose connections, and testing the transfer case control module for proper functionality.

5. Can I continue driving with OBDII code P1808?

- It is generally safe to continue driving with the code P1808, but it is recommended to address the issue promptly to avoid potential problems with engaging 4-wheel drive low mode when needed.

6. Are there any DIY repair tips for OBDII code P1808?

- DIY repair tips may include checking and cleaning the connections to the 4-wheel drive low indicator switch, inspecting the wiring for any visible damage, and resetting the transfer case control module.

7. How much does it cost to repair OBDII code P1808?

- The cost of repairing OBDII code P1808 can vary depending on the underlying cause. Simple fixes like cleaning connections or replacing a faulty switch may be relatively inexpensive, while issues with the control module could be more costly.

8. Can OBDII code P1808 be a false alarm?

- In some cases, OBDII code P1808 could be triggered by a temporary glitch or sensor error. It is recommended to clear the code and see if it reappears before proceeding with any repairs.

9. What are the long-term effects of ignoring OBDII code P1808?

- Ignoring OBDII code P1808 could lead to continued issues with the 4-wheel drive low indicator, potential difficulties in engaging 4-wheel drive low mode, and reduced off-road capability in certain situations.

10. How can a professional mechanic help with OBDII code P1808?

- A professional mechanic can use specialized diagnostic tools to pinpoint the exact cause of P1808, perform a thorough inspection of the indicator circuit, and make the necessary repairs to ensure proper functionality of the 4-wheel drive low system.