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P1E2A Cadillac 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 Cadillac 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 827

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

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include transmission shifting issues, illuminated warning lights on the dashboard, and reduced vehicle performance.

2. What can cause the OBDII code P1E2A to trigger in a Cadillac?

- The code P1E2A in a Cadillac is often triggered by a malfunction in the auxiliary transmission fluid pump phase U current sensor circuit, leading to low voltage readings.

3. How serious is the OBDII code P1E2A in a Cadillac?

- The code P1E2A should be addressed promptly to prevent potential transmission damage and ensure the vehicle operates safely and efficiently.

4. What are some possible repair tips for resolving the OBDII code P1E2A in a Cadillac?

- Repair tips may include checking the wiring and connections related to the auxiliary transmission fluid pump phase U current sensor, testing the sensor for proper functionality, and replacing any faulty components as needed.

5. Can I drive my Cadillac with the OBDII code P1E2A present?

- It is not recommended to drive the vehicle with the OBDII code P1E2A present, as it may lead to further damage to the transmission system and compromise driving safety.

6. How can a professional diagnose the OBDII code P1E2A in a Cadillac?

- A professional diagnostic scan tool can be used to retrieve the specific fault code, followed by thorough inspection of the auxiliary transmission fluid pump phase U current sensor circuit and related components.

7. Are there any recalls or technical service bulletins related to the OBDII code P1E2A for Cadillac vehicles?

- It's advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to the OBDII code P1E2A specific to Cadillac vehicles.

8. Will resetting the OBDII system clear the code P1E2A in a Cadillac?

- Resetting the OBDII system may temporarily clear the code P1E2A, but it is crucial to address the underlying issue causing the fault code to prevent its recurrence.

9. Is it possible to prevent the OBDII code P1E2A from occurring in a Cadillac?

- Regular maintenance, including checking the transmission system components and addressing any issues promptly, can help prevent the occurrence of the OBDII code P1E2A in a Cadillac.

10. How much does it typically cost to repair the OBDII code P1E2A in a Cadillac?

- The cost of repairing the OBDII code P1E2A in a Cadillac can vary depending on the extent of the issue, parts needed for replacement, and labor rates at the repair facility. It's recommended to obtain quotes from trusted mechanics or dealerships for an accurate estimate.