AutoCodes – Buick – P1E37 Buick

P1E37 Buick Code - Auxiliary Transmission Fluid Pump Inverter High Temperature

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: P1E37 Buick indicates Auxiliary Transmission Fluid Pump Inverter High Temperature.
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 673

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 P1E37 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 inverter temperature sensor is part of the power inverter module and is not serviced separately.

OBDII Code P1E37 Buick - Auxiliary Transmission Fluid Pump Inverter High Temperature - AutoCodes.com — P1E37 Buick Code - Auxiliary Transmission Fluid Pump Inverter High Temperature

What does this mean?

What are the Possible Causes of the DTC P1E37 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 P1E37 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 P1E37 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 P1E37 Buick 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 P1E37 Buick Code

What does the OBDII code P1E37 mean for a Buick?

P1E37 indicates that the auxiliary transmission fluid pump inverter has detected a high temperature condition, potentially affecting its operation.

What are the common symptoms of the P1E37 code?

Symptoms may include an illuminated check engine light, overheating transmission, reduced vehicle performance, and unusual noises from the transmission area.

What causes the P1E37 code to appear in a Buick?

Common causes include a malfunctioning auxiliary transmission fluid pump, electrical issues in the inverter, low or degraded transmission fluid, or a faulty temperature sensor.

Can I drive my Buick with the P1E37 code?

Driving with the P1E37 code is not recommended, as it could lead to further damage to the transmission or inverter system if overheating persists.

How is the P1E37 code diagnosed?

A technician will use an OBDII scanner to confirm the code, inspect the auxiliary transmission fluid pump and related wiring, and check the fluid levels and quality.

What repairs are needed to fix the P1E37 code?

Repairs may include replacing the auxiliary transmission fluid pump, repairing damaged wiring, cleaning or replacing connectors, or flushing and refilling the transmission fluid.

Can low transmission fluid cause the P1E37 code?

Yes, low or degraded transmission fluid can contribute to overheating and trigger the P1E37 code.

How much does it cost to fix the P1E37 code on a Buick?

Repair costs vary depending on the issue, but they typically range from $200 to $700, with pump replacement being one of the more expensive repairs.

How can I prevent the P1E37 code from recurring?

Regular maintenance, such as checking and replacing transmission fluid as needed, inspecting wiring for damage, and keeping the transmission system clean, can help prevent this code.

Is the P1E37 code specific to Buick vehicles?

While it is commonly associated with Buick models, the P1E37 code may also appear in other GM vehicles with similar transmission systems.