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P1900 2003 Ford F150 Code - Output Shaft Speed Circuit Intermittent Malfunction

Quick Answer

The P1900 diagnostic trouble code (DTC) for a 2003 Ford F150 indicates an intermittent malfunction in the output shaft speed circuit. Common causes include Faulty output shaft speed sensor, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM). 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
P1900 2003 Ford F150 indicates Output Shaft Speed Circuit Intermittent Malfunction.
Common causes
Common causes include Faulty output shaft speed sensor, Damaged wiring or connectors in the circuit, Malfunctioning transmission control module (TCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1900 2003 Ford F150 Description

The P1900 diagnostic trouble code (DTC) for a 2003 Ford F150 indicates an intermittent malfunction in the output shaft speed circuit. The output shaft speed sensor is a crucial component of the vehicle's transmission system, responsible for monitoring the speed of the transmission output shaft. This information is essential for the proper operation of the transmission, as it helps the vehicle's computer system determine the appropriate shift points and ensure smooth gear changes.

OBDII Code P1900 2003 Ford F150 - Output Shaft Speed Circuit Intermittent Malfunction
P1900 2003 Ford F150 Code - Output Shaft Speed Circuit Intermittent Malfunction

Common Causes of P1900 2003 Ford F150

  1. Faulty output shaft speed sensor
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning transmission control module (TCM)
  4. Issues with the transmission itself
  5. Corrosion or contamination in the sensor or circuit

Symptoms of P1900 2003 Ford F150

  1. Erratic shifting
  2. Harsh shifting
  3. Delayed engagement of gears
  4. Transmission slippage
  5. Limp mode activation

How to Fix P1900 2003 Ford F150

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspect the output shaft speed sensor and circuit for any visible damage.
  2. Test the output shaft speed sensor using a multimeter to check for proper resistance and voltage readings.
  3. Inspect the wiring and connectors in the circuit for any signs of damage, corrosion, or contamination, and repair or replace as needed.
  4. If the sensor is faulty, replace it with a new one and clear the DTC from the vehicle's computer system.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the transmission is operating smoothly.

Cost to Fix P1900 2003 Ford F150

The typical repair costs for addressing a P1900 code on a 2003 Ford F150 can vary depending on the specific cause of the issue. In general, the cost of replacing an output shaft speed sensor can range from $100 to $200, including parts and labor. However, if additional repairs or component replacements are needed, the total cost could be higher.

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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 P1900 2003 Ford F150 Code

1. What are the common symptoms of OBDII code P1900 on a 2003 Ford F150?

- Common symptoms include erratic shifting, transmission slipping, and the Check Engine light illuminating.

2. What does the OBDII code P1900 for Output Shaft Speed Circuit Intermittent Malfunction indicate in a 2003 Ford F150?

- This code indicates a problem with the output shaft speed sensor circuit, which monitors the speed of the transmission output shaft.

3. What are the possible causes of the Output Shaft Speed Circuit Intermittent Malfunction code on a 2003 Ford F150?

- Possible causes include a faulty output shaft speed sensor, damaged wiring or connectors, or a malfunctioning transmission control module.

4. How can I diagnose the cause of OBDII code P1900 on my 2003 Ford F150?

- Diagnosing this code typically involves using a scan tool to check for any other related trouble codes, testing the output shaft speed sensor, and inspecting the wiring and connectors for damage.

5. Can I continue driving my 2003 Ford F150 with the P1900 code present?

- It is not recommended to continue driving with this code present, as it can lead to further transmission issues and potential damage if left unresolved.

6. How can I repair the Output Shaft Speed Circuit Intermittent Malfunction code on my 2003 Ford F150?

- Repairing this code may involve replacing the output shaft speed sensor, repairing or replacing damaged wiring or connectors, or reprogramming the transmission control module.

7. Will resetting the Check Engine light resolve the P1900 code on my 2003 Ford F150?

- Resetting the Check Engine light may temporarily clear the code, but it will likely return if the underlying issue is not addressed.

8. Is it possible to prevent the Output Shaft Speed Circuit Intermittent Malfunction code from appearing on my 2003 Ford F150?

- Regular maintenance, such as checking and replacing transmission fluid as needed, can help prevent issues that may trigger this code.

9. How much does it typically cost to repair OBDII code P1900 on a 2003 Ford F150?

- The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from $200 to $500 or more, including parts and labor.

10. Can a DIY enthusiast tackle the repair for the P1900 code on a 2003 Ford F150?

- While some DIY enthusiasts may have the skills and tools to address this code, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

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