AutoCodes – Saturn – P1B65 Saturn

P1B65 Saturn Code - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P1B65 Saturn indicates Hybrid/Electric Vehicle Battery 43 Circuit High Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 964

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 Mar 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B65 Saturn Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1B65 Saturn - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage - AutoCodes.com — P1B65 Saturn Code - Hybrid/Electric Vehicle Battery 43 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B65 Saturn?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1B65 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 P1B65 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 P1B65 Saturn Code

1. What are the common symptoms of OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- Common symptoms include check engine light illumination, reduced vehicle performance, and potential inability to start the vehicle.

2. What are the possible causes of OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- Possible causes may include issues with the battery management system, a faulty battery pack, damaged wiring, or a malfunctioning high voltage circuit.

3. How serious is OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- This code is serious as it relates to high voltage systems in hybrid/electric vehicles. It should be diagnosed and repaired promptly to avoid potential safety hazards.

4. Can I continue driving my vehicle with OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the high voltage system and potentially unsafe conditions.

5. How can OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage be diagnosed?

- Diagnosis typically involves using a specialized OBDII scanner to read the fault code, conducting a visual inspection of the high voltage components, and testing the battery pack and associated circuits.

6. What are some repair tips for resolving OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- Repair tips may include checking and repairing damaged wiring, replacing a faulty battery pack, resetting the battery management system, and ensuring proper connections in the high voltage circuit.

7. Are there any safety precautions to keep in mind when working on OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- Yes, safety precautions should always be followed when working on high voltage systems. It is recommended to consult a professional or an experienced technician for handling such repairs.

8. How much does it typically cost to repair OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage?

- Repair costs can vary depending on the underlying issue, parts needed, and labor rates. It is advisable to obtain quotes from reputable automotive shops or dealerships.

9. Can OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage be reset without repairs?

- While the code can be cleared with an OBDII scanner, it is essential to address the root cause of the issue to prevent the code from reoccurring.

10. Is it possible to prevent OBDII code P1B65 Saturn Hybrid/Electric Vehicle Battery 43 Circuit High Voltage from appearing again?

- Regular maintenance of the high voltage system, prompt addressing of any warning signs, and following manufacturer recommendations can help prevent the reoccurrence of this fault code.