P1A94 Chevrolet Code - 14-Volt Power Module Stuck ON
Quick Answer
The purpose of the Accessory Power Module (APM), integral to the Starter/Generator Control Module (SGCM), is to control the amount and direction of energy flowing between the 42 V DC and 14 V DC buses via the APM, bi-directional 42 V DC to 14 V DC converter. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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
- P1A94 Chevrolet indicates 14-Volt Power Module Stuck ON.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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 P1A94 Chevrolet Description
When the APM Power Conversion direction is set to a value of 42 V to 14 V, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM. When the Service Charge or jump start is requested, the energy will flow from the 14 V DC Bus to the 42 V DC Bus via the APM. When the APM Power Conversion direction is set to a value of Off, the APM will be turned OFF and not consume or transfer any power. When the APM Power Conversion direction is set to a value of Invalid, the energy will flow from the 42 V DC Bus to the 14 V DC Bus via the APM.
What are the Possible Causes of the DTC P1A94 Chevrolet?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module (SGCM) harness is open or shorted
- Starter/Generator Control Module (SGCM) circuit poor electrical connection
How to Fix the DTC P1A94 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 P1A94 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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Frequently Asked Questions about P1A94 Chevrolet Code
1. What are the common symptoms of OBDII code P1A94 in a Chevrolet related to the 14-Volt Power Module being stuck ON?
The common symptoms include illuminated warning lights on the dashboard, issues with the vehicle's electrical system, and potential battery draining.
2. What are the possible causes of OBDII code P1A94 indicating the 14-Volt Power Module is stuck ON in a Chevrolet?
The code P1A94 can be triggered by a faulty 14-Volt Power Module, wiring issues, a malfunctioning control module, or a software glitch.
3. How can I diagnose the OBDII code P1A94 in my Chevrolet related to the 14-Volt Power Module issue?
Diagnosing this code may require using a professional OBDII scanner to read and interpret the trouble codes, checking the wiring connections, inspecting the 14-Volt Power Module, and testing the control module.
4. Can I continue driving my Chevrolet with the OBDII code P1A94 and the 14-Volt Power Module stuck ON?
It is not recommended to drive the vehicle with this issue as it can lead to further electrical problems, battery drainage, and potential safety hazards.
5. What are some repair tips for fixing the OBDII code P1A94 indicating the 14-Volt Power Module is stuck ON in my Chevrolet?
Repair tips may include checking and repairing any damaged wiring, replacing the faulty 14-Volt Power Module, resetting the control module, and ensuring all connections are secure.
6. How much does it typically cost to repair OBDII code P1A94 related to the 14-Volt Power Module issue in a Chevrolet?
The cost of repair can vary depending on the exact cause of the problem, parts needed, labor rates, and whether the repair is done at a dealership or an independent repair shop.
7. Can a DIY enthusiast fix the OBDII code P1A94 indicating the 14-Volt Power Module is stuck ON in a Chevrolet?
While some minor repairs like checking connections can be done by a DIY enthusiast, diagnosing and repairing complex electrical issues may require professional expertise and specialized tools.
8. Are there any recalls or technical service bulletins related to OBDII code P1A94 in Chevrolet vehicles with a 14-Volt Power Module stuck ON?
It's recommended to check with Chevrolet dealerships or online databases for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or fixes.
9. How can I prevent OBDII code P1A94 from occurring again in my Chevrolet due to the 14-Volt Power Module issue?
Regular maintenance checks, addressing electrical issues promptly, and following the manufacturer's recommended service schedule can help prevent the recurrence of this code in the future.
10. Is it safe to reset the OBDII code P1A94 related to the 14-Volt Power Module issue in my Chevrolet using an OBDII scanner?
Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely resurface. It's crucial to diagnose and fix the root cause of the code for a permanent solution.
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