AutoCodes – Generic – P1E2A

P1E2A 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 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 700

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

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?

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 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.

Need more information about the P1E2A code?

Need more information on how to fix the P1E2A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E2A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1E2A Acura — Brake Fluid Pressure Sensor PUR Circuit Low Voltage
P1E2A Buick — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A Cadillac — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A Chevrolet — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A GMC — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage
P1E2A Honda — Brake Fluid Pressure Sensor PUR Circuit Low Voltage
P1E2A Saturn — Auxiliary Transmission Fluid Pump Phase U Current Sensor Circuit Low Voltage

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 Code

1. What are the common symptoms of OBDII code P1E2A?

The common symptoms of OBDII code P1E2A include poor shifting performance, transmission slipping, and the transmission going into limp mode.

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

Possible causes of OBDII code P1E2A include a faulty auxiliary transmission fluid pump, issues with the phase U current sensor circuit, low voltage in the sensor circuit, or wiring/connectivity issues.

3. How serious is OBDII code P1E2A?

OBDII code P1E2A should be addressed promptly to prevent further damage to the transmission system. Ignoring this code could lead to more severe transmission problems and potentially costly repairs.

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

It is not recommended to drive your vehicle with OBDII code P1E2A present, as it can lead to further damage to the transmission system. It's best to have the issue diagnosed and repaired before driving the vehicle again.

5. How can I diagnose OBDII code P1E2A?

Diagnosing OBDII code P1E2A typically involves using a scan tool to retrieve the code, testing the auxiliary transmission fluid pump, checking the phase U current sensor circuit for faults, and inspecting the wiring/connectors for any issues.

6. Is it possible to repair OBDII code P1E2A on my own?

Repairing OBDII code P1E2A may require advanced automotive knowledge and specialized tools. It is recommended to have a professional mechanic diagnose and repair this code to ensure the issue is properly resolved.

7. How much does it cost to fix OBDII code P1E2A?

The cost of fixing OBDII code P1E2A can vary depending on the specific cause of the issue, labor rates, and the cost of parts. It's best to get a diagnostic from a trusted mechanic to get an accurate estimate.

8. Can a faulty auxiliary transmission fluid pump cause OBDII code P1E2A?

Yes, a faulty auxiliary transmission fluid pump can cause OBDII code P1E2A, as it plays a crucial role in the transmission system's operation and can affect the phase U current sensor circuit.

9. How can I prevent OBDII code P1E2A from occurring?

Regular maintenance of the transmission system, including checking the fluid levels and quality, can help prevent issues that may trigger OBDII code P1E2A. Additionally, addressing any transmission-related symptoms promptly can prevent more severe issues.

10. Is OBDII code P1E2A specific to certain vehicle makes and models?

OBDII code P1E2A can be found in various vehicle makes and models that utilize OBDII systems. However, the specific diagnostic and repair procedures may vary depending on the manufacturer and the transmission system design.