P1A73 Buick 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 Buick 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.
Code P1A73 Buick Description
What are the Possible Causes of the DTC P1A73 Buick?
- 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 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 P1A73 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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Frequently Asked Questions about P1A73 Buick Code
1. What does the OBDII code P1A73 mean for a Buick?
The P1A73 code indicates a problem with the 14 Volt Power Module Temperature Sensor 2 Circuit, specifically detecting a high voltage condition.
2. What are common symptoms of the P1A73 code?
Symptoms may include the check engine light turning on, reduced fuel efficiency, electrical system malfunctions, or the vehicle entering limp mode.
3. What causes the P1A73 code to appear?
Common causes include a faulty temperature sensor, damaged wiring or connectors, a malfunctioning 14 Volt Power Module, or issues with the vehicle’s electrical system.
4. How can I diagnose the P1A73 code on my Buick?
Diagnosis typically involves using an OBDII scanner, inspecting the temperature sensor and its wiring, and performing voltage and continuity tests on the circuit.
5. Can I drive my Buick with the P1A73 code?
While the vehicle might still be drivable, driving with this code can lead to further electrical issues or reduced performance, so it’s best to address it promptly.
6. How do I fix the P1A73 code on my Buick?
Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, or replacing the 14 Volt Power Module if necessary.
7. How much does it cost to repair the P1A73 code?
Repair costs can vary but typically range from $100 to $500, depending on whether only the sensor or additional components like the power module need replacement.
8. Can a low battery cause the P1A73 code?
Yes, an unstable or low battery voltage can sometimes trigger this code by affecting the 14 Volt Power Module’s operation.
9. Do I need to reprogram the ECU after fixing the P1A73 code?
In most cases, reprogramming is not needed, but clearing the code with an OBDII scanner and test-driving the vehicle is recommended to verify the repair.
10. Can a dirty or corroded connector cause the P1A73 code?
Yes, corroded or dirty connectors can disrupt the circuit and trigger the P1A73 code. Cleaning or replacing the connectors may resolve the issue.
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