P1A6B Chevrolet Code - Starter/Generator Control Module 5 Volt Reference Circuit
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 harness is open or shorted, Starter/Generator Control Module 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
- P1A6B Chevrolet indicates Starter/Generator Control Module 5 Volt Reference Circuit.
- Common causes
- Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module harness is open or shorted, Starter/Generator Control Module 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 P1A6B 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 starting 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 P1A6B Chevrolet?
- Faulty Starter/Generator Control Module (SGCM)
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
How to Fix the DTC P1A6B 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 P1A6B 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 P1A6B Chevrolet Code
1. What are the common symptoms of OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
The common symptoms include issues with starting the vehicle, poor acceleration, reduced engine power, and the illumination of the Check Engine Light.
2. What could be the possible causes of OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
Possible causes include a faulty starter/generator control module, damaged wiring or connectors in the 5 volt reference circuit, or a malfunctioning sensor connected to the circuit.
3. How can one diagnose OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
Diagnosis involves using a scan tool to read the code, inspecting the wiring and connectors in the 5 volt reference circuit, testing the starter/generator control module, and checking related sensors for proper operation.
4. Are there any DIY repair tips for addressing OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
DIY repair tips include checking and repairing any damaged wiring or connectors in the 5 volt reference circuit, replacing a faulty starter/generator control module, and ensuring all connections are secure and free of corrosion.
5. Can driving with OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit cause further damage?
Continuing to drive with this code present can potentially cause issues with starting the vehicle, poor performance, and further damage to components connected to the 5 volt reference circuit, so it is recommended to address the issue promptly.
6. How much does it typically cost to repair OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $500 or more, including parts and labor.
7. Are there any recalls or technical service bulletins related to OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
It is recommended to check with a Chevrolet dealership or online databases for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or remedies provided by the manufacturer.
8. Can resetting the Check Engine Light resolve OBDII code P1A6B in a Chevrolet related to the Starter/Generator Control Module 5 Volt Reference Circuit?
While resetting the Check Engine Light may temporarily turn off the indicator, it will not fix the underlying issue causing the code. It is important to diagnose and repair the root cause to prevent further problems.
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