AutoCodes – GMC – P1E2C GMC

P1E2C GMC Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance

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: P1E2C GMC indicates Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance.
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 1,138

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 P1E2C GMC 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 P1E2C GMC - Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance - AutoCodes.com — P1E2C GMC Code - Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1E2C GMC?

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 P1E2C GMC?

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 P1E2C GMC 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 P1E2C GMC Code

1. What are the common symptoms of OBDII code P1E2C in a GMC vehicle?

- Common symptoms include issues with shifting gears, transmission slipping, poor fuel efficiency, and a possible illuminated check engine light.

2. What could cause the OBDII code P1E2C related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance in a GMC?

- The code P1E2C can be triggered by a faulty auxiliary transmission fluid pump, a malfunctioning current sensor, wiring issues, or a problem with the transmission control module.

3. How serious is the OBDII code P1E2C in a GMC vehicle?

- The code P1E2C should be addressed promptly to prevent further damage to the transmission system and ensure the vehicle operates properly.

4. Can I continue driving with the OBDII code P1E2C present in my GMC?

- It is not recommended to continue driving with the code P1E2C as it can lead to transmission issues and potential safety hazards. It is best to address the problem as soon as possible.

5. How can I diagnose and repair the OBDII code P1E2C in my GMC related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance?

- Diagnosis typically involves inspecting the auxiliary transmission fluid pump, checking the current sensor, testing the wiring for continuity, and scanning the transmission control module for faults. Repair may involve replacing the faulty components and clearing the code.

6. Is it possible to reset the OBDII code P1E2C in a GMC without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reoccurring.

7. Are there any DIY tips for fixing the OBDII code P1E2C in a GMC?

- DIY tips may include checking the wiring connections, inspecting the auxiliary transmission fluid pump for any visible damage, and ensuring the current sensor is securely in place. However, complex repairs may require professional assistance.

8. How much does it typically cost to repair the OBDII code P1E2C in a GMC?

- The cost of repairs for the OBDII code P1E2C can vary depending on the extent of the damage, the parts that need replacement, and whether you choose to DIY or seek professional help. It is advisable to get a quote from a trusted mechanic.

9. Can a faulty Auxiliary Transmission Fluid Pump cause other issues besides triggering the OBDII code P1E2C in a GMC?

- Yes, a faulty auxiliary transmission fluid pump can lead to poor transmission performance, overheating of the transmission, and potential damage to other components if left unresolved.

10. How long does it typically take to repair the OBDII code P1E2C related to the Auxiliary Transmission Fluid Pump Phase U Current Sensor Performance in a GMC?

- The repair time can vary depending on the exact cause of the issue, availability of parts, and the expertise of the mechanic. In some cases, it can be resolved within a few hours, while more complex issues may take longer to address.