AutoCodes – Saturn – P1E09 Saturn

P1E09 Saturn Code - Hybrid Battery Contactor Status Circuit High Voltage

Quick Answer

The hybrid powertrain control module monitors the hybrid/EV battery high voltage contactor status and requests contactor function primarily via serial data. 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: P1E09 Saturn indicates Hybrid Battery Contactor Status Circuit High Voltage.
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 898

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E09 Saturn Description

The hybrid powertrain control module monitors the hybrid/EV battery high voltage contactor status and requests contactor function primarily via serial data. In the event of a serial data fault there is a redundant discreet circuit between the two controllers that transmits the hybrid powertrain control module contactor requests to the hybrid powertrain control module 2 via a pulse width modulated (PWM) signal. The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module, and is not serviced separately.

OBDII Code P1E09 Saturn - Hybrid Battery Contactor Status Circuit High Voltage - AutoCodes.com — P1E09 Saturn Code - Hybrid Battery Contactor Status Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1E09 Saturn?

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

How to Fix the DTC P1E09 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 P1E09 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 P1E09 Saturn Code

What does the OBDII code P1E09 mean on a Saturn?

The P1E09 code indicates an issue with the Hybrid Battery Contactor Status Circuit, specifically detecting an abnormally high voltage in the circuit.

What are the common symptoms of the P1E09 code?

Symptoms may include the check engine light illuminating, reduced hybrid system performance, the vehicle entering limp mode, or a failure to start.

What causes the P1E09 code on a Saturn?

Common causes include a faulty hybrid battery contactor, damaged wiring or connectors in the circuit, a malfunctioning hybrid battery control module, or a high-voltage system fault.

Can I drive my Saturn with the P1E09 code?

It is not recommended to drive the vehicle, as the hybrid system may be compromised, leading to reduced performance or potential safety risks.

How is the P1E09 code diagnosed?

A technician will use a scan tool to read codes and data, inspect the hybrid battery contactor and related wiring, and test the voltage levels in the affected circuit.

What repairs can fix the P1E09 code?

Repairs may include replacing a faulty hybrid battery contactor, repairing damaged wiring or connectors, or replacing the hybrid battery control module.

How much does it cost to fix the P1E09 code?

Repair costs can vary but typically range from $200 to $1,500, depending on whether wiring repairs or component replacements are required.

Can a dead 12V battery trigger the P1E09 code?

While unlikely, a weak or dead 12V battery can indirectly affect hybrid system components and should be tested as part of the diagnosis.

Does the P1E09 code mean the hybrid battery is failing?

Not necessarily. The code specifically relates to the contactor circuit, not the battery itself, though battery issues should also be ruled out during diagnosis.

Can I reset the P1E09 code myself?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isnâ€™t resolved. Proper diagnosis and repair are recommended.