Engine-CodesBuick – P1E2A Buick

P1E2A Buick Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

Quick Answer

The P1E2A diagnostic trouble code (DTC) for Buick vehicles specifically refers to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage. Common causes include Faulty auxiliary transmission fluid pump, Wiring issues or poor electrical connections, Failed current sensor in the pump. 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
P1E2A Buick indicates Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty auxiliary transmission fluid pump, Wiring issues or poor electrical connections, Failed current sensor in the pump.
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 14, 2024
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Code P1E2A Buick Description

The P1E2A diagnostic trouble code (DTC) for Buick vehicles specifically refers to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage. This code indicates that there is an issue with the current sensor circuit in the auxiliary transmission fluid pump, which is responsible for maintaining proper fluid pressure and flow within the transmission system. The auxiliary transmission fluid pump plays a crucial role in ensuring smooth gear shifts, optimal performance, and overall efficiency of the transmission system.

OBDII Code P1E2A Buick - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A Buick Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

Common Causes of P1E2A Buick

  1. Faulty auxiliary transmission fluid pump
  2. Wiring issues or poor electrical connections
  3. Failed current sensor in the pump
  4. ECM malfunction or communication error
  5. Low transmission fluid levels or contaminated fluid

Symptoms of P1E2A Buick

  1. Erratic shifting or harsh engagements
  2. Delayed gear changes
  3. Transmission slipping
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P1E2A Buick

  1. Diagnose the issue using a scan tool to retrieve the specific DTC and pinpoint the exact cause of the problem.
  2. Inspect the wiring and electrical connections related to the current sensor circuit for any damage or corrosion.
  3. Test the auxiliary transmission fluid pump and current sensor for proper operation and replace any faulty components.
  4. Clear the DTC from the vehicle's ECM memory and perform a test drive to ensure the issue has been resolved.
  5. Monitor the transmission system for any abnormal behavior and recheck for any recurring DTCs to confirm the repair was successful.

Cost to Fix P1E2A Buick

The typical repair costs for addressing the P1E2A code on a Buick vehicle can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the cost of diagnosing the problem, replacing any faulty components such as the auxiliary transmission fluid pump or current sensor, and labor charges for the repair process. It is important to note that actual repair costs may vary based on the location of the auto repair shop, the vehicle's make and model, and the extent of the repairs needed. Additionally, diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is recommended to obtain quotes from multiple reputable repair shops to ensure a competitive price for the repair.

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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 P1E2A Buick Code

1. What are the common symptoms of OBDII code P1E2A in a Buick related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage?

- Common symptoms include issues with shifting gears, transmission slipping, and potential illumination of the Check Engine light.

2. What are the possible causes of OBDII code P1E2A in a Buick?

- The code P1E2A in a Buick can be caused by a faulty auxiliary transmission fluid pump, a malfunctioning current sensor, damaged wiring or connectors, or low voltage in the circuit.

3. How can I diagnose the OBDII code P1E2A related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage in my Buick?

- Diagnosis involves using a diagnostic scanner to read the code, inspecting the wiring and connectors for any visible damage, testing the current sensor, and checking the voltage in the circuit.

4. Can I still drive my Buick with OBDII code P1E2A present?

- It is not recommended to drive your Buick with the OBDII code P1E2A present, as it can lead to further damage to the transmission and other related components.

5. How can I repair OBDII code P1E2A in my Buick?

- Repairing OBDII code P1E2A involves addressing the root cause, which may include replacing the auxiliary transmission fluid pump, current sensor, repairing damaged wiring or connectors, or addressing any issues with low voltage in the circuit.

6. Is it safe to reset the OBDII code P1E2A in my Buick using a diagnostic scanner?

- While you can reset the code using a diagnostic scanner, it is important to address and repair the underlying issue causing the code before continuing to drive the vehicle.

7. Can a DIY enthusiast fix OBDII code P1E2A in a Buick?

- Depending on the skill level and experience of the DIY enthusiast, fixing OBDII code P1E2A may be possible by following repair guides and using the necessary tools and equipment.

8. How much does it cost to repair OBDII code P1E2A in a Buick at a dealership or auto repair shop?

- The cost of repairing OBDII code P1E2A in a Buick at a dealership or auto repair shop can vary depending on the exact cause of the issue, but it may involve parts and labor costs.

9. Will OBDII code P1E2A cause any long-term damage to my Buick if left untreated?

- Ignoring OBDII code P1E2A can potentially lead to further damage to the transmission system and other components, which may result in costly repairs in the long run.

10. How frequently does OBDII code P1E2A related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage occur in Buick vehicles?

- The occurrence of OBDII code P1E2A in Buick vehicles can vary, but it is not an uncommon issue related to the auxiliary transmission fluid pump and current sensor circuit.

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