Engine-CodesBuick – P1E30 Buick

P1E30 Buick Code - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage

Quick Answer

The P1E30 Buick code indicates a problem with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit having low voltage. Common causes include Faulty wiring or connectors in the current sensor circuit, Malfunctioning auxiliary transmission fluid pump, Damaged current sensor. 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
P1E30 Buick indicates Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty wiring or connectors in the current sensor circuit, Malfunctioning auxiliary transmission fluid pump, Damaged current sensor.
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 15, 2024
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Code P1E30 Buick Description

The P1E30 Buick code indicates a problem with the Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit having low voltage. The auxiliary transmission fluid pump is responsible for maintaining proper fluid pressure within the transmission system, ensuring smooth gear shifts and optimal performance. The current sensor circuit monitors the electrical current flowing through the pump, providing feedback to the vehicle's computer system.

OBDII Code P1E30 Buick - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage
P1E30 Buick Code - Auxiliary Transmission Fluid Pump Phase W Current Sensor Circuit Low Voltage

Common Causes of P1E30 Buick

  1. Faulty wiring or connectors in the current sensor circuit.
  2. Malfunctioning auxiliary transmission fluid pump.
  3. Damaged current sensor.
  4. Issues with the vehicle's computer system.
  5. Electrical interference or corrosion in the circuit.

Symptoms of P1E30 Buick

  1. Erratic shifting or difficulty changing gears.
  2. Harsh or delayed gear changes.
  3. Transmission slipping or jerking.
  4. Decreased fuel efficiency.
  5. Illumination of the check engine light.

How to Fix P1E30 Buick

  1. Begin by conducting a thorough inspection of the current sensor circuit, checking for any damaged wiring or connectors. Repair or replace any faulty components.
  2. Test the auxiliary transmission fluid pump to ensure it is functioning correctly. Replace the pump if necessary.
  3. Inspect the current sensor for any damage and replace it if needed.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the low voltage in the current sensor circuit.

Cost to Fix P1E30 Buick

The typical repair costs for addressing a P1E30 Buick code can vary depending on the specific cause of the issue. Parts such as a new auxiliary transmission fluid pump, current sensor, or wiring components may be required, along with labor costs for diagnosis and repair. On average, the repair for this issue may range from $200 to $600, including parts and labor. However, it's essential to note that actual costs can vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates can be higher in certain areas or at dealerships.

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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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