AutoCodes – GMC – P1A73 GMC

P1A73 GMC Code - 14 Volt Power Module Temperature Sensor 2 Circuit High Voltage

Quick Answer

The 14 V power module, also called the accessory DC power control module, constantly monitors system temperature to protect against overheat conditions. Common causes include Faulty 14 Volt Power Module Temperature Sensor 2, 14 Volt Power Module Temperature Sensor 2 harness is open or shorted, 14 Volt Power Module Temperature Sensor 2 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: P1A73 GMC indicates 14 Volt Power Module Temperature Sensor 2 Circuit High Voltage.
Common causes: Common causes include Faulty 14 Volt Power Module Temperature Sensor 2, 14 Volt Power Module Temperature Sensor 2 harness is open or shorted, 14 Volt Power Module Temperature Sensor 2 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 867

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 21, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A73 GMC Description

The 14 V power module, also called the accessory DC power control module, constantly monitors system temperature to protect against overheat conditions. The module also monitors the function of the temperature sensors. These sensors are internal to the accessory DC power control module and are not serviced separately from the control module.

OBDII Code P1A73 GMC - 14 Volt Power Module Temperature Sensor 2 Circuit High Voltage - AutoCodes.com — P1A73 GMC Code - 14 Volt Power Module Temperature Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1A73 GMC?

Faulty 14 Volt Power Module Temperature Sensor 2
14 Volt Power Module Temperature Sensor 2 harness is open or shorted
14 Volt Power Module Temperature Sensor 2 circuit poor electrical connection

How to Fix the DTC P1A73 GMC?

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 P1A73 GMC 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 P1A73 GMC Code

1. What are common symptoms of OBDII code P1A73 in a GMC vehicle?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and potential engine performance issues.

2. What does the OBDII code P1A73 GMC indicate?

- The code P1A73 indicates a high voltage condition in the 14 Volt Power Module Temperature Sensor 2 Circuit in a GMC vehicle.

3. What are possible causes of OBDII code P1A73 in a GMC vehicle?

- Possible causes include a faulty temperature sensor, wiring issues, a malfunctioning power module, or a problem with the vehicle's electrical system.

4. How can I diagnose the OBDII code P1A73 in my GMC vehicle?

- Diagnosing the code typically involves using an OBDII scanner to retrieve the specific fault code, checking the wiring and connections related to the temperature sensor, and testing the sensor's resistance.

5. Can I still drive my GMC vehicle with the OBDII code P1A73 present?

- It is not recommended to drive the vehicle with the code present, as it can lead to potential engine performance issues and further damage if left unaddressed.

6. How can I repair OBDII code P1A73 in my GMC vehicle?

- Repairing the code may involve replacing the faulty temperature sensor, repairing any damaged wiring or connections, or addressing issues with the power module or electrical system.

7. Is it safe to reset the check engine light after fixing OBDII code P1A73 in my GMC vehicle?

- Yes, it is safe to reset the check engine light after fixing the issue. However, if the problem persists, the light may illuminate again, indicating further diagnostics are needed.

8. Are there any DIY tips for addressing OBDII code P1A73 in a GMC vehicle?

- DIY tips may include checking and cleaning sensor connections, inspecting wiring for damage, and ensuring all electrical components are securely connected.

9. How important is it to address OBDII code P1A73 promptly in a GMC vehicle?

- It is important to address the code promptly to prevent potential engine damage, ensure optimal vehicle performance, and avoid further complications down the road.

10. Can a professional mechanic help with diagnosing and repairing OBDII code P1A73 in my GMC vehicle?

- Yes, a qualified mechanic with experience in diagnosing and repairing OBDII codes can help accurately identify the issue and perform the necessary repairs to resolve the code P1A73 in your GMC vehicle.