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Engine-Codes – GMC – P1E2B GMC

P1E2B GMC Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage

Quick Answer

The P1E2B diagnostic trouble code (DTC) for GMC vehicles refers to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage. Common causes include Faulty wiring or connectors in the current sensor circuit, Malfunctioning auxiliary transmission fluid pump, Issues with the transmission control module (TCM). 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
P1E2B GMC indicates Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage.
Common causes
Common causes include Faulty wiring or connectors in the current sensor circuit, Malfunctioning auxiliary transmission fluid pump, Issues with the transmission control module (TCM).
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 10, 2024
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Code P1E2B GMC Description

The P1E2B diagnostic trouble code (DTC) for GMC vehicles refers to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage. This specific code is related to the auxiliary transmission fluid pump, which plays a crucial role in assisting the main transmission pump in maintaining proper fluid pressure within the transmission system.

OBDII Code P1E2B GMC - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage
P1E2B GMC Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage

Common Causes of P1E2B GMC

  1. Faulty wiring or connectors in the current sensor circuit
  2. Malfunctioning auxiliary transmission fluid pump
  3. Issues with the transmission control module (TCM)
  4. Software glitch in the vehicle's onboard computer system
  5. Electrical issues within the transmission system

Symptoms of P1E2B GMC

  1. Harsh shifting or erratic gear changes
  2. Transmission slipping or delayed engagement
  3. Transmission overheating
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency

How to Fix P1E2B GMC

  1. Diagnose the issue by using a diagnostic scan tool to retrieve the specific fault codes and pinpoint the problem area.
  2. Inspect the wiring and connectors in the current sensor circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the auxiliary transmission fluid pump for proper operation and replace if it is found to be faulty.
  4. Check the transmission control module (TCM) for any software updates or glitches. Perform a reprogramming if necessary.
  5. Clear the fault codes, reset the system, and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P1E2B GMC

The typical repair costs for addressing a P1E2B GMC code can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of replacing a faulty auxiliary transmission fluid pump can range from $200 to $600, while the cost of diagnosing and repairing wiring or connector issues may be around $100 to $300. Additional costs for software updates or TCM reprogramming may apply.

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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 P1E2B GMC Code

1. What are the common symptoms of OBDII code P1E2B in a GMC vehicle?

The common symptoms of OBDII code P1E2B include illuminated check engine light, transmission shifting issues, and decreased fuel efficiency.

2. What can cause the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage error code in a GMC vehicle?

Common causes of the P1E2B code in a GMC vehicle include a faulty transmission fluid pump, damaged wiring or connectors, or a malfunctioning current sensor.

3. How serious is the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage OBDII code in a GMC?

The P1E2B code should be addressed promptly as it can lead to transmission performance issues and potentially cause further damage to the vehicle's transmission system.

4. What are some repair tips for fixing the P1E2B code in a GMC vehicle?

Repair tips for resolving the P1E2B code include inspecting and repairing any damaged wiring or connectors, testing and, if necessary, replacing the current sensor, and checking the transmission fluid pump for proper function.

5. Can I drive my GMC vehicle with the P1E2B code present?

It is not recommended to drive your GMC vehicle with the P1E2B code present, as it can lead to transmission issues and potentially cause further damage. It is best to address the issue as soon as possible.

6. How can I reset the OBDII code P1E2B in my GMC vehicle?

After repairing the underlying issue causing the P1E2B code, you can reset it using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

7. Will the P1E2B code clear on its own in a GMC vehicle?

The P1E2B code is unlikely to clear on its own and typically requires proper diagnosis and repair to resolve the underlying issue causing the fault.

8. Is the repair for the P1E2B code in a GMC vehicle something I can do myself?

Depending on your level of automotive repair experience, you may be able to address the P1E2B code yourself by following repair guides and using the necessary tools and equipment.

9. How much does it cost to fix the Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit High Voltage code in a GMC vehicle?

The cost of fixing the P1E2B code can vary depending on the extent of the issue, parts needed for repair, and labor costs. It is recommended to obtain quotes from reputable mechanics or repair shops.

10. Can a GMC dealership service department help with diagnosing and repairing the P1E2B code?

Yes, the service department at a GMC dealership is equipped to diagnose and repair the P1E2B code in your vehicle using specialized tools, equipment, and trained technicians.

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