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P1900 Ford Code - Output Shaft Speed Circuit Intermittent Malfunction

Quick Answer

The P1900 Ford diagnostic trouble code indicates an intermittent malfunction in the output shaft speed circuit of the vehicle. Common causes include Faulty output shaft speed sensor, Loose or corroded wiring connections, Damaged sensor 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
P1900 Ford indicates Output Shaft Speed Circuit Intermittent Malfunction.
Common causes
Common causes include Faulty output shaft speed sensor, Loose or corroded wiring connections, Damaged sensor 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1900 Ford Description

The P1900 Ford diagnostic trouble code indicates an intermittent malfunction in the output shaft speed circuit of the vehicle. The output shaft speed sensor is a vital component in the transmission system that measures the speed of the output shaft and sends this information to the vehicle's engine control module (ECM). This data is crucial for the ECM to make appropriate adjustments to the transmission shifting strategy, ensuring optimal performance and fuel efficiency.

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

Common Causes of P1900 Ford

  1. Faulty output shaft speed sensor
  2. Loose or corroded wiring connections
  3. Damaged sensor harness
  4. ECM software issues
  5. Mechanical damage to the transmission system

Symptoms of P1900 Ford

  1. Erratic shifting patterns
  2. Harsh gear changes
  3. Transmission slippage
  4. Reduced fuel efficiency
  5. Rough driving experience

How to Fix P1900 Ford

  1. Perform a thorough inspection of the output shaft speed sensor and wiring connections.
  2. Test the sensor's functionality using a multimeter to determine if it is sending accurate signals to the ECM.
  3. Replace the output shaft speed sensor if it is found to be faulty.
  4. Repair or replace any damaged wiring connections or harnesses.
  5. Clear the diagnostic trouble code from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1900 Ford

The typical repair costs for addressing a P1900 Ford code can vary depending on the specific vehicle make and model, as well as the extent of the damage and parts required. On average, repairing this issue could range from $200 to $500, including parts and labor. However, it is advisable to consult with a professional mechanic or auto repair shop to get an accurate estimate based on your vehicle's specific needs and location. Keep in mind that diagnostic time and labor rates can vary, so it's best to inquire about these details before proceeding with the repair.

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Information for Specific Ford Models

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.

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