AutoCodes – Saturn – P1EC6 Saturn

P1EC6 Saturn Code - Hybrid/EV Battery Pack Heater Performance

Quick Answer

The hybrid/EV battery contains 5 high-voltage contactors and 2 transistors. Common causes include Faulty Hybrid/EV Battery Pack, Hybrid/EV Battery Pack harness is open or shorted, Hybrid/EV Battery Pack 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: P1EC6 Saturn indicates Hybrid/EV Battery Pack Heater Performance.
Common causes: Common causes include Faulty Hybrid/EV Battery Pack, Hybrid/EV Battery Pack harness is open or shorted, Hybrid/EV Battery Pack 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 870

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 P1EC6 Saturn Description

The hybrid/EV battery contains 5 high-voltage contactors and 2 transistors. The high-voltage contactors 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 are 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 are the precharge transistor and heater transistor. These contactors/transistors close and open in sequence and are 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. Earth is provided through the case earth.
The hybrid/EV battery pack coolant heater is mounted to the coolant inlet on the back side of the hybrid/EV battery contactor assembly. The hybrid/EV battery pack coolant heater uses a 360 V power source.
After the ignition is turned ON, the hybrid/EV battery pack coolant heater is commanded ON. The hybrid/EV powertrain control module 2 monitors the temperature change at the hybrid/EV battery pack coolant temperature sensor 1 to determine if the hybrid/EV battery pack coolant heater is functioning properly.

OBDII Code P1EC6 Saturn - Hybrid/EV Battery Pack Heater Performance - AutoCodes.com — P1EC6 Saturn Code - Hybrid/EV Battery Pack Heater Performance

What does this mean?

What are the Possible Causes of the DTC P1EC6 Saturn?

Faulty Hybrid/EV Battery Pack
Hybrid/EV Battery Pack harness is open or shorted
Hybrid/EV Battery Pack circuit poor electrical connection

How to Fix the DTC P1EC6 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 P1EC6 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 P1EC6 Saturn 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 P1EC6 Saturn Code

1. What does the OBDII code P1EC6 mean for a Saturn vehicle?

P1EC6 indicates an issue with the Hybrid/EV battery pack heater performance, which is responsible for maintaining the batteryâ€™s optimal operating temperature in cold conditions.

2. What are the common symptoms of the P1EC6 code?

Symptoms may include an illuminated check engine light, reduced battery performance, difficulty starting in cold weather, or a drop in overall vehicle efficiency.

3. What causes the P1EC6 code to appear?

Common causes include a malfunctioning battery pack heater, damaged wiring or connectors, a faulty temperature sensor, or software issues in the battery control module.

4. Is it safe to drive with the P1EC6 code active?

While the vehicle may still be drivable, ignoring this code can lead to reduced battery performance or long-term damage, especially in cold climates.

5. How is the P1EC6 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the battery pack heater, check for damaged wiring or connectors, and test the heater circuit for proper operation.

6. Can the P1EC6 code clear itself?

No, the code typically wonâ€™t clear itself. Repairs must be made, and the code reset using an OBDII scanner.

7. How do you fix the P1EC6 code?

Repairs may include replacing the battery pack heater, repairing damaged wiring, updating software, or replacing a faulty temperature sensor.

8. How much does it cost to fix the P1EC6 code?

Repair costs can vary widely but typically range from $200 to $800, depending on whether the issue is with the heater, wiring, or other components.

9. Can extreme cold weather trigger the P1EC6 code?

Yes, extreme cold can exacerbate issues with the battery pack heater and trigger the code if the system cannot maintain proper battery temperature.

10. How can I prevent the P1EC6 code from reoccurring?

Regular maintenance, keeping the battery pack heater and related components in good condition, and addressing any warning lights promptly can help prevent recurrence.