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P1E33 Buick Code - Auxiliary Transmission Fluid Pump Phase U-V-W Current Sensors Not Plausible

Quick Answer

The P1E33 Buick diagnostic trouble code indicates that there is an issue with the auxiliary transmission fluid pump phase U-V-W current sensors not being plausible. Common causes include Faulty current sensors, Wiring issues or corrosion, Mechanical failure in the auxiliary transmission fluid 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
P1E33 Buick indicates Auxiliary Transmission Fluid Pump Phase U-V-W Current Sensors Not Plausible.
Common causes
Common causes include Faulty current sensors, Wiring issues or corrosion, Mechanical failure in the auxiliary transmission fluid 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P1E33 Buick Description

The P1E33 Buick diagnostic trouble code indicates that there is an issue with the auxiliary transmission fluid pump phase U-V-W current sensors not being plausible. In simpler terms, this means that the sensors responsible for monitoring the current in the auxiliary transmission fluid pump's phases are not providing consistent or accurate readings. The auxiliary transmission fluid pump plays a crucial role in maintaining proper fluid pressure and circulation within the transmission system. When the current sensors associated with this pump malfunction or provide incorrect data, it can lead to various performance issues and potential long-term damage to the vehicle.

OBDII Code P1E33 Buick - Auxiliary Transmission Fluid Pump Phase U-V-W Current Sensors Not Plausible
P1E33 Buick Code - Auxiliary Transmission Fluid Pump Phase U-V-W Current Sensors Not Plausible

Common Causes of P1E33 Buick

  1. Faulty current sensors
  2. Wiring issues or corrosion
  3. Mechanical failure in the auxiliary transmission fluid pump
  4. Electronic control module (ECM) malfunction
  5. Low transmission fluid levels

Symptoms of P1E33 Buick

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

How to Fix P1E33 Buick

  1. Begin by conducting a comprehensive diagnostic scan to identify the specific cause of the sensor malfunction.
  2. Inspect the wiring and connectors associated with the current sensors for any damage or corrosion. Repair or replace as needed.
  3. Test the auxiliary transmission fluid pump for mechanical issues and proper functionality. Replace the pump if necessary.
  4. Clear the error codes and reset the system to ensure proper operation.
  5. Perform a road test to confirm that the transmission is functioning correctly after the repair.

Cost to Fix P1E33 Buick

The typical repair cost for addressing the P1E33 Buick code related to the auxiliary transmission fluid pump phase U-V-W current sensors can range from $300 to $800, depending on the extent of the issue and the parts needed for replacement. This estimate includes both parts and labor. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may differ based on the shop's location and expertise. For a more precise estimate, it's advisable to consult with local auto repair shops.

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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 P1E33 Buick Code

1. What does the OBDII code P1E33 mean on a Buick?

P1E33 indicates that the Auxiliary Transmission Fluid Pump Phase U-V-W Current Sensors are reporting implausible or inconsistent values to the vehicle's control module.

2. What are the symptoms of code P1E33?

Common symptoms include illuminated check engine light, erratic shifting, reduced transmission performance, and in some cases, the vehicle may enter limp mode.

3. What causes the P1E33 code to appear?

The code can be caused by faulty current sensors, a malfunctioning auxiliary transmission fluid pump, damaged wiring or connectors, or a failure in the transmission control module (TCM).

4. Can I drive my Buick with a P1E33 code?

Driving with a P1E33 code is not recommended as it may lead to poor transmission performance and could cause further damage if the issue is not addressed.

5. How is the P1E33 code diagnosed?

A technician will use a scan tool to verify the code, inspect the wiring and connectors for damage, test the auxiliary pump and sensors, and check for any related TCM issues.

6. How do I fix the P1E33 code on my Buick?

Repairs may include replacing the faulty current sensors, repairing or replacing damaged wiring, replacing the auxiliary transmission fluid pump, or reprogramming or replacing the TCM if necessary.

7. What is the auxiliary transmission fluid pump's role in my vehicle?

The auxiliary transmission fluid pump helps maintain proper fluid pressure for the transmission, particularly in stop-start systems or during low engine speed conditions.

8. Can a software update resolve the P1E33 code?

In some cases, a software update for the transmission control module may resolve the issue if the problem is related to calibration or programming errors.

9. How much does it cost to repair a P1E33 code?

Repair costs can vary depending on the root cause, but replacing a sensor or repairing wiring may cost $100-$300, while replacing the auxiliary pump or TCM could cost significantly more.

10. What preventative maintenance can help avoid a P1E33 code?

Regular inspection and maintenance of the transmission system, including checking wiring, connectors, and fluid levels, can help prevent issues leading to this code.

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