AutoCodes – Buick – P1ECD Buick

P1ECD Buick Code - Battery Charger High-Voltage Converter 1 Temperature Sensor Circuit Performance

Quick Answer

The battery charger will diagnose its own systems and determine when a fault condition is present. 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: P1ECD Buick indicates Battery Charger High-Voltage Converter 1 Temperature Sensor Circuit 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 1,112

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 P1ECD Buick Description

The battery charger will diagnose its own systems and determine when a fault condition is present. Diagnostics and system status is communicated from the battery charger to the hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for Diagnostic Trouble Code (DTC) information. This DTC is for the battery charger are internal measurements that verify the charger is performing properly. The battery charger measures internal voltages, currents, and temperatures and verifies they are within the proper range.

OBDII Code P1ECD Buick - Battery Charger High-Voltage Converter 1 Temperature Sensor Circuit Performance - AutoCodes.com — P1ECD Buick Code - Battery Charger High-Voltage Converter 1 Temperature Sensor Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1ECD Buick?

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

How to Fix the DTC P1ECD Buick?

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 P1ECD Buick 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 P1ECD Buick Code

1. What does the P1ECD code mean on a Buick?

The P1ECD code indicates an issue with the performance of the Battery Charger High-Voltage Converter 1 Temperature Sensor Circuit, typically in hybrid or electric vehicles.

2. What are common symptoms of the P1ECD code?

Symptoms may include an illuminated check engine light, reduced charging efficiency, overheating warnings, or limited vehicle performance.

3. What causes the P1ECD code to appear?

Common causes include a faulty temperature sensor, wiring issues, poor electrical connections, or a malfunctioning high-voltage converter.

4. Can I drive my Buick with the P1ECD code?

Driving with this code is not recommended, as it may lead to overheating or damage to the high-voltage system components.

5. How is the P1ECD code diagnosed?

A technician will use an OBDII scanner to read the code, inspect the temperature sensor, check wiring and connectors, and test the high-voltage converter for proper operation.

6. How do you fix the P1ECD code on a Buick?

Repairs may involve replacing the temperature sensor, repairing or replacing damaged wiring, or addressing faults in the high-voltage converter.

7. How much does it cost to repair the P1ECD code?

Repair costs vary but can range from $100 to $500 or more, depending on whether the issue is a sensor replacement or a larger component failure.

8. Can a dead battery trigger the P1ECD code?

While unlikely, a severely depleted or malfunctioning high-voltage battery may contribute to this code if it affects the system's performance.

9. What tools are needed to fix the P1ECD code?

Essential tools include an OBDII scanner, multimeter for testing electrical connections, and potentially a replacement temperature sensor or wiring components.

10. Will clearing the code fix the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.