AutoCodesBuick – P1E1A Buick

P1E1A Buick Code - Auxiliary Transmission Fluid Pump Control Module System Voltage High

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 Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module circuit poor electrical connection. 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
P1E1A Buick indicates Auxiliary Transmission Fluid Pump Control Module System Voltage High.
Common causes
Common causes include Faulty Power Inverter Module, Power Inverter Module harness is open or shorted, Power Inverter Module circuit poor electrical connection.
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 1,009
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 04, 2022
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Code P1E1A 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. The hybrid powertrain control module and the motor control modules share the power inverter module ignition voltage circuit, battery voltage circuits and chassis earth.
OBDII Code P1E1A Buick - Auxiliary Transmission Fluid Pump Control Module System Voltage High - AutoCodes.com
P1E1A Buick Code - Auxiliary Transmission Fluid Pump Control Module System Voltage High

What are the Possible Causes of the DTC P1E1A Buick?

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

How to Fix the DTC P1E1A 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 P1E1A 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.

Need more information about the P1E1A Buick code?

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Need Help with the Code?

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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 P1E1A Buick Code

What does OBDII code P1E1A mean for a Buick?

Code P1E1A indicates the Auxiliary Transmission Fluid Pump Control Module System Voltage is too high, which could affect transmission fluid circulation.

What are common symptoms of code P1E1A in a Buick?

Symptoms may include erratic shifting, transmission overheating, or a check engine light.

What causes code P1E1A to appear?

It can be caused by a malfunctioning auxiliary transmission fluid pump, faulty control module, wiring issues, or an electrical system overvoltage.

Can I still drive my Buick with code P1E1A active?

Driving with this code is not recommended as it could lead to transmission damage if fluid circulation is compromised.

How do you diagnose code P1E1A in a Buick?

A mechanic may use a diagnostic scanner to confirm the code, inspect wiring and connectors, and test the auxiliary pump and control module.

What repairs might fix code P1E1A?

Repairs could include replacing the auxiliary transmission fluid pump, fixing damaged wiring, or replacing the control module.

What tools are needed to fix code P1E1A?

You’ll need an OBDII scanner, multimeter, and potentially specialized tools for accessing and replacing transmission pump components.

How much does it cost to repair code P1E1A in a Buick?

Costs vary depending on the exact issue, but repairs can range from $200 to $800 or more, especially if parts need replacement.

Can a weak battery cause code P1E1A?

Yes, low or fluctuating battery voltage can lead to electrical issues, including triggering this code.

Is code P1E1A specific to Buick vehicles?

While commonly associated with Buicks, this code can appear in other vehicles with similar transmission systems.

Discuss the causes and fixes for P1E1A Buick OBDII Code

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