AutoCodes – Saturn – P1E37 Saturn

P1E37 Saturn 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 Saturn 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 929

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

What does this mean?

What are the Possible Causes of the DTC P1E37 Saturn?

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 Saturn?

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 Saturn 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 P1E37 Saturn Code

1. What does the OBDII code P1E37 mean for a Saturn?

Code P1E37 indicates that the Auxiliary Transmission Fluid Pump Inverter is experiencing a high-temperature condition, which could affect the performance of the transmission.

2. What are the common symptoms of the P1E37 code?

Symptoms may include transmission overheating, the vehicle entering limp mode, reduced fuel efficiency, or the illumination of the Check Engine Light.

3. What causes the P1E37 code to appear on a Saturn?

Common causes include a malfunctioning auxiliary transmission fluid pump, issues with the inverter cooling system, low transmission fluid levels, or electrical problems like damaged wiring or connectors.

4. Can I drive my Saturn with a P1E37 code?

Driving with this code is not recommended, as it could lead to further damage to the transmission if the overheating issue is not resolved.

5. How can I diagnose the P1E37 code?

Start by checking the transmission fluid level and condition, inspecting the wiring and connectors to the auxiliary pump, and ensuring the cooling system for the inverter is functioning properly.

6. What is the role of the auxiliary transmission fluid pump inverter?

The auxiliary transmission fluid pump inverter helps regulate the temperature of the transmission by powering the pump that circulates fluid, especially in hybrid or electric vehicles.

7. How is the P1E37 code fixed?

Repairs may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring, flushing and refilling the transmission fluid, or addressing cooling system issues.

8. How much does it cost to fix the P1E37 code on a Saturn?

Repair costs can vary widely, ranging from $150 for a transmission fluid flush to over $1,000 if the auxiliary pump or inverter needs replacement.

9. Can low transmission fluid cause the P1E37 code?

Yes, low or degraded transmission fluid can lead to overheating, which may trigger the P1E37 code.

10. Do I need a professional mechanic to fix the P1E37 code?

While some basic checks like fluid levels can be done by the owner, diagnosing and repairing the auxiliary pump or inverter typically requires a professional mechanic with specialized tools and knowledge.