AutoCodes – Generic – P0D20

P0D20 Code - Battery Charger Output Voltage Performance

Quick Answer

The hybrid/EV powertrain control module 2 monitors the battery charger high-voltage output and current output and ensures they are within the proper range. Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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: P0D20 indicates Battery Charger Output Voltage Performance.
Common causes: Common causes include Faulty Battery Charger, Battery Charger harness is open or shorted, Battery Charger 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 2,576

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 P0D20 Description

The hybrid/EV powertrain control module 2 monitors the battery charger high-voltage output and current output and ensures they are within the proper range. The battery charger operates in either a constant current mode or a constant voltage mode. Whichever mode you are in will determine which diagnostic will be run. The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.

OBDII Code P0D20 - Battery Charger Output Voltage Performance - AutoCodes.com — P0D20 Code - Battery Charger Output Voltage Performance

What does this mean?

What are the Possible Causes of the DTC P0D20?

Faulty Battery Charger
Battery Charger harness is open or shorted
Battery Charger circuit poor electrical connection

How to Fix the DTC P0D20?

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 P0D20 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 P0D20 code?

Need more information on how to fix the P0D20 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0D20 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0D20 Buick — Battery Charger Output Voltage Performance
P0D20 Cadillac — Battery Charger Output Voltage Performance
P0D20 Chevrolet — Battery Charger Output Voltage Performance
P0D20 GMC — Battery Charger Output Voltage Performance
P0D20 Saturn — Battery Charger Output Voltage Performance

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 P0D20 Code

1. What are the common symptoms of OBDII code P0D20 (Battery Charger Output Voltage Performance)?

- Common symptoms include difficulty starting the vehicle, weak battery performance, and issues with the charging system.

2. What are the possible causes of OBDII code P0D20?

- Possible causes of this code include a faulty battery charger, damaged wiring or connectors, or issues with the vehicle's battery.

3. How can I diagnose the root cause of OBDII code P0D20?

- You can diagnose the code by checking the battery charger output voltage with a multimeter, inspecting the wiring and connectors for damage, and testing the vehicle's battery health.

4. Can a weak car battery trigger OBDII code P0D20?

- Yes, a weak or failing car battery can trigger this code as it may not be able to maintain the required voltage levels for the battery charger.

5. What is the recommended repair for OBDII code P0D20?

- The recommended repair involves addressing the specific cause of the code, which may include replacing the battery charger, repairing damaged wiring, or replacing the vehicle's battery.

6. Can I drive my vehicle with OBDII code P0D20?

- It is not recommended to drive your vehicle with this code as it may lead to further damage to the electrical system and potential issues with starting the vehicle.

7. How do I reset OBDII code P0D20 after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

8. Will OBDII code P0D20 affect my vehicle's performance?

- Yes, this code can affect your vehicle's performance by causing issues with starting, charging, and overall electrical system operation.

9. Can a DIY enthusiast repair OBDII code P0D20 at home?

- Depending on your level of expertise, you may be able to address this code at home by following proper diagnostic procedures and making necessary repairs.

10. How often should I check my vehicle's battery and charging system to prevent OBDII code P0D20?

- It is recommended to check your vehicle's battery and charging system regularly, especially during routine maintenance inspections, to prevent issues that could trigger this code.