AutoCodes – Buick – P1E2A Buick

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

Quick Answer

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Common causes include Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted. 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 Program Power Inverter Module, Faulty Power Inverter Module, Power Inverter Module harness is open or shorted.
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.

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Code Popularity 780

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E2A Buick Description

The power inverter module, often referred to as the drive motor generator power inverter module, contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. This is an internal fault detection of the power inverter module. This fault is handled inside the power inverter module and no external circuits are involved.
Each motor control module operates its respective drive motor based upon hybrid powertrain control module commands. Each motor control module controls its respective motor through the sequencing actuation of high-current switching transistors called insulated gate bipolar transistors. Each motor operates utilising 3-phase alternating current AC electricity. Each insulated gate bipolar transistor operates a single phase of the drive motor generator. Each phase is individually identified as U, V and W. Each motor control module monitors the current of each phase in order to detect out of range current conditions.
Because each individual motor's phase circuits are electrically joined together, the phases normally flow about the same amount of current. The motor control module performs a mathematical calculation to verify that the phase current sensors are accurate. If the U-V-W phase current sensors indicate about the same amount of phase current, the sum of the calculation should be near zero. If the U-V-W phase currents are not similar, this DTC will set.

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

What does this mean?

What are the Possible Causes of the DTC P1E2A Buick?

Program Power Inverter Module
Faulty Power Inverter Module
Power Inverter Module harness is open or shorted
Power Inverter Module circuit poor electrical connection

How to Fix the DTC P1E2A Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1E2A Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.