Engine-CodesDodge – P0990 Dodge

P0990 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'E' Circuit High

Quick Answer

The P0990 OBD-II trouble code refers to the Transmission Fluid Pressure Sensor/Switch 'E' Circuit High in Dodge vehicles. Common causes include Faulty transmission fluid pressure sensor/switch, Wiring or connector issues in the transmission fluid pressure sensor/switch circuit, Low transmission fluid levels. 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
P0990 Dodge indicates Transmission Fluid Pressure Sensor/Switch 'E' Circuit High.
Common causes
Common causes include Faulty transmission fluid pressure sensor/switch, Wiring or connector issues in the transmission fluid pressure sensor/switch circuit, Low transmission fluid levels.
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 11, 2024
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Code P0990 Dodge Description

The P0990 OBD-II trouble code refers to the Transmission Fluid Pressure Sensor/Switch 'E' Circuit High in Dodge vehicles. This code indicates that there is a high voltage condition detected in the transmission fluid pressure sensor or switch circuit 'E'. The transmission fluid pressure sensor or switch is responsible for monitoring the fluid pressure within the transmission and sending this information to the vehicle's engine control module (ECM). The ECM uses this data to ensure that the transmission shifts smoothly and efficiently.

OBDII Code P0990 Dodge - Transmission Fluid Pressure Sensor/Switch 'E' Circuit High
P0990 Dodge Code - Transmission Fluid Pressure Sensor/Switch 'E' Circuit High

Common Causes of P0990 Dodge

  1. Faulty transmission fluid pressure sensor/switch
  2. Wiring or connector issues in the transmission fluid pressure sensor/switch circuit
  3. Low transmission fluid levels
  4. Contaminated or degraded transmission fluid
  5. ECM malfunction

Symptoms of P0990 Dodge

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Transmission overheating
  4. Illuminated check engine light
  5. Decreased fuel efficiency

How to Fix P0990 Dodge

  1. Begin by checking the transmission fluid level and condition. Top off or change the fluid if necessary.
  2. Inspect the wiring and connectors in the transmission fluid pressure sensor/switch circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the transmission fluid pressure sensor/switch using a multimeter to determine if it is functioning correctly. Replace if faulty.
  4. Clear the trouble code from the ECM using an OBD-II scanner to reset the system.
  5. Test drive the vehicle to ensure that the transmission shifts smoothly and the code does not reappear.

Cost to Fix P0990 Dodge

The typical repair costs for addressing the P0990 code in Dodge vehicles can vary depending on the specific cause of the issue. In general, replacing a faulty transmission fluid pressure sensor/switch can cost between $150 and $300, including parts and labor. However, if the issue is related to wiring or connector problems, the repair costs could be higher due to the additional diagnostic work required.

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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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