AutoCodes – Chevrolet – P1A5A Chevrolet

P1A5A Chevrolet Code - Hybrid System Temperature

Quick Answer

The deviation of the temperature across the battery pack is checked using the 6 temperature sensors. Common causes include Faulty Battery Pack, Battery Pack harness is open or shorted, 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: P1A5A Chevrolet indicates Hybrid System Temperature.
Common causes: Common causes include Faulty Battery Pack, Battery Pack harness is open or shorted, 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 990

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 Feb 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A5A Chevrolet Description

The deviation of the temperature across the battery pack is checked using the 6 temperature sensors. If one module within the pack is bad, it should manifest itself in a high Delta T.

OBDII Code P1A5A Chevrolet - Hybrid System Temperature - AutoCodes.com — P1A5A Chevrolet Code - Hybrid System Temperature

What does this mean?

What are the Possible Causes of the DTC P1A5A Chevrolet?

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

How to Fix the DTC P1A5A Chevrolet?

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 P1A5A Chevrolet 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 P1A5A Chevrolet Code

1. What does the P1A5A code mean on a Chevrolet?

The P1A5A code indicates a "Hybrid System Temperature" issue, meaning the vehicle's hybrid system has detected a temperature problem that could affect performance or safety.

2. What are the common symptoms of the P1A5A code?

Symptoms may include the Check Engine Light or Hybrid System Warning Light, reduced hybrid system performance, or the vehicle running solely on the gas engine.

3. What causes the P1A5A code on a Chevrolet?

Common causes include a malfunctioning hybrid battery cooling system, faulty temperature sensors, debris blocking the cooling fan, or a damaged hybrid control module.

4. Can I keep driving with the P1A5A code on my Chevrolet?

Itâ€™s not recommended to drive with this code for an extended period, as overheating could damage the hybrid system components and lead to costly repairs.

5. How do you diagnose the P1A5A code on a Chevrolet?

A technician will use a scan tool to check for related codes, inspect the hybrid battery cooling system, and test the temperature sensors for proper operation.

6. How is the P1A5A code typically fixed?

Repairs may involve cleaning or replacing the hybrid battery cooling fan, replacing a faulty temperature sensor, or repairing wiring issues in the cooling system.

7. Can a clogged cooling fan trigger the P1A5A code?

Yes, a clogged or malfunctioning cooling fan can restrict airflow to the hybrid battery, causing it to overheat and triggering the code.

8. How much does it cost to fix the P1A5A code on a Chevrolet?

Repair costs can range from $150 to $1,000 or more, depending on whether the issue involves cleaning the cooling fan, replacing sensors, or repairing the hybrid control module.

9. Can low coolant levels cause the P1A5A code?

While not a direct cause, low coolant levels can contribute to inadequate cooling in systems that use liquid-cooled hybrid batteries, potentially triggering the code.

10. Do I need to update the hybrid control module to fix the P1A5A code?

In some cases, a software update or reprogramming of the hybrid control module may be required to resolve the issue. A technician can determine if this is necessary.