Engine-CodesFord – P1903 Ford

P1903 Ford Code - Kickdown Solenoid Circuit Low Voltage

Quick Answer

The P1903 Ford diagnostic trouble code (DTC) refers to a Kickdown Solenoid Circuit Low Voltage issue. Common causes include Wiring issues or shorts in the kickdown solenoid circuit, Faulty kickdown solenoid, Poor connection or corrosion in the circuit. 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
P1903 Ford indicates Kickdown Solenoid Circuit Low Voltage.
Common causes
Common causes include Wiring issues or shorts in the kickdown solenoid circuit, Faulty kickdown solenoid, Poor connection or corrosion in the circuit.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1903 Ford Description

The P1903 Ford diagnostic trouble code (DTC) refers to a Kickdown Solenoid Circuit Low Voltage issue. This code is specific to Ford vehicles and indicates that there is a problem with the kickdown solenoid circuit, which is responsible for controlling the transmission's kickdown feature.

OBDII Code P1903 Ford - Kickdown Solenoid Circuit Low Voltage
P1903 Ford Code - Kickdown Solenoid Circuit Low Voltage

Common Causes of P1903 Ford

  1. Wiring issues or shorts in the kickdown solenoid circuit
  2. Faulty kickdown solenoid
  3. Poor connection or corrosion in the circuit
  4. Malfunctioning transmission control module (TCM)
  5. Electrical issues such as a blown fuse or relay

Symptoms of P1903 Ford

  1. Sluggish acceleration
  2. Delayed or rough shifting
  3. Reduced fuel efficiency
  4. Illuminated Check Engine Light
  5. Transmission slipping or jerking

How to Fix P1903 Ford

  1. Begin by diagnosing the issue using a scan tool to retrieve the trouble codes and perform a visual inspection of the kickdown solenoid circuit.
  2. Check the wiring harness for any damage, corrosion, or loose connections. Repair or replace any damaged wires as needed.
  3. Test the kickdown solenoid for proper operation and replace it if it is found to be faulty.
  4. Inspect the transmission control module (TCM) for any signs of damage or malfunction. Replace if necessary.
  5. Clear the trouble codes and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1903 Ford

The cost of repairing a P1903 Ford code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 and $400 for parts and labor. Keep in mind that diagnostic time and labor rates can differ between auto repair shops, so it's best to get a few quotes to determine the exact cost for your vehicle.

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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.

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