AutoCodes – Saturn – P1EC0 Saturn

P1EC0 Saturn Code - Hybrid/EV Battery System Contactor Stuck Open

Quick Answer

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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: P1EC0 Saturn indicates Hybrid/EV Battery System Contactor Stuck Open.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy Control 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 885

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1EC0 Saturn Description

The hybrid/EV battery contains 5 high voltage contactors and 2 transistors. The high voltage contactors and transistors allow the high voltage DC batteries to be connected to the vehicle or safely contain the high voltage DC within the hybrid/EV battery assembly. The 5 high voltage contactors consist of a main positive high voltage contactor, main negative high voltage contactor, charge positive high voltage contactor, charge negative high voltage contactor and multi-function high voltage contactor. The 2 transistors consist of the precharge transistor and heater transistor. The contactors and transistors close and open in a specific sequence controlled by the hybrid/EV powertrain control module 2. The hybrid/EV powertrain control module 2 supplies voltage to the control circuit for the high voltage contactors/transistors. Ground is provided through the case ground.

OBDII Code P1EC0 Saturn - Hybrid/EV Battery System Contactor Stuck Open - AutoCodes.com — P1EC0 Saturn Code - Hybrid/EV Battery System Contactor Stuck Open

What does this mean?

What are the Possible Causes of the DTC P1EC0 Saturn?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC P1EC0 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 P1EC0 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.

Need more information about the P1EC0 Saturn 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 P1EC0 Saturn Code

1. What are the common symptoms of OBDII code P1EC0 in a Saturn Hybrid/EV vehicle?

- Common symptoms include the inability to start the vehicle, reduced power, and warning lights related to the hybrid/EV system.

2. What does the OBDII code P1EC0 indicate in a Saturn Hybrid/EV model?

- The code P1EC0 indicates that the contactor in the hybrid/EV battery system is stuck open, affecting the proper operation of the system.

3. What are the possible causes of the Hybrid/EV battery system contactor being stuck open in a Saturn vehicle?

- Possible causes include a faulty contactor, wiring issues, corrosion, or a problem with the hybrid/EV battery system components.

4. How can I diagnose the issue related to the Hybrid/EV battery system contactor in a Saturn Hybrid/EV model?

- Diagnosing the issue may involve using a diagnostic scan tool to retrieve the OBDII code, inspecting the contactor, checking wiring connections, and testing the battery system components.

5. Can I drive my Saturn with the OBDII code P1EC0 present?

- It is not recommended to drive the vehicle with the code P1EC0 present, as it can lead to further damage to the hybrid/EV system and potential safety hazards.

6. Is it possible to repair the contactor stuck open issue in a Saturn Hybrid/EV model at home?

- Repairing the contactor stuck open issue may require specialized tools and knowledge of hybrid/EV systems, so it is recommended to seek assistance from a qualified technician.

7. How much does it typically cost to repair the Hybrid/EV battery system contactor issue in a Saturn vehicle?

- Repair costs can vary depending on the extent of the issue, parts needed, and labor rates, but it is advisable to budget for a potentially significant repair bill.

8. Can I prevent the Hybrid/EV battery system contactor from getting stuck open in my Saturn vehicle?

- Regular maintenance, including checking the hybrid/EV system components, keeping the contactor clean, and addressing any warning signs promptly, can help prevent the contactor from getting stuck open.

9. Are there any recalls or technical service bulletins related to the OBDII code P1EC0 in Saturn Hybrid/EV models?

- It is recommended to check with a Saturn dealership or the manufacturer for any recalls or technical service bulletins related to the Hybrid/EV battery system contactor issue.

10. How critical is it to address the OBDII code P1EC0 in a Saturn Hybrid/EV model promptly?

- It is crucial to address the code P1EC0 promptly to prevent further damage to the hybrid/EV system, ensure safe operation of the vehicle, and avoid potential safety risks.