P06B1 2015 GMC Sierra Code - Sensor Supply Voltage Circuit Low Voltage
Quick Answer
The generator control module, also called the starter/generator control module is comprised of the following three control modules: the hybrid/EV powertrain control module 1, the 14 V power module, and the drive motor control module. Common causes include Faulty Starter/Generator Control Module, 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
- P06B1 2015 GMC Sierra indicates Sensor Supply Voltage Circuit Low Voltage.
- Common causes
- Common causes include Faulty Starter/Generator Control Module, 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 P06B1 2015 GMC Sierra Description
The drive motor control module uses an internal 15 V reference power supply in order to operate the drive motor sensors and processor. This fault is handled inside the generator control module and no external circuits are involved.
The Diagnostic Trouble Code (DTC) will be set when the reference voltage is less than 8.8 V for 1 second.
What are the Possible Causes of the DTC P06B1 2015 GMC Sierra?
- Faulty Starter/Generator Control Module
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P06B1 2015 GMC Sierra?
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 P06B1 2015 GMC Sierra 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 P06B1 2015 GMC Sierra Code
1. What does the OBDII code P06B1 mean on a 2015 GMC Sierra?
The P06B1 code indicates a "Sensor Supply Voltage Circuit Low Voltage," meaning the voltage supplied to certain sensors is below the required level.
2. What are the common symptoms of the P06B1 code in a 2015 GMC Sierra?
Symptoms may include poor engine performance, a check engine light, reduced fuel efficiency, and erratic sensor readings.
3. What causes the P06B1 code to appear on a 2015 GMC Sierra?
Common causes include a faulty powertrain control module (PCM), damaged wiring, corroded connectors, or a short in the sensor supply voltage circuit.
4. Can a bad sensor trigger the P06B1 code on my 2015 GMC Sierra?
Yes, a malfunctioning sensor that relies on the supply voltage circuit can trigger the P06B1 code.
5. How do I diagnose the P06B1 code on a 2015 GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, testing the sensor supply voltage, and checking for PCM-related issues.
6. Can I drive my 2015 GMC Sierra with the P06B1 code?
Driving with this code is not recommended, as it can lead to poor performance, further damage, or safety concerns.
7. How do I fix the P06B1 code on a 2015 GMC Sierra?
Repairs may include repairing damaged wiring, cleaning or replacing connectors, replacing a faulty sensor, or reprogramming or replacing the PCM.
8. Is the P06B1 code expensive to repair on a 2015 GMC Sierra?
Repair costs vary depending on the issue. Replacing wiring or connectors is generally inexpensive, while PCM replacement can be costly.
9. Does the P06B1 code require PCM replacement on a 2015 GMC Sierra?
Not always. The PCM should only be replaced after verifying that the issue isn’t caused by wiring, connectors, or sensors.
10. Can a weak battery cause the P06B1 code on a 2015 GMC Sierra?
Yes, a weak or failing battery can cause voltage issues, potentially triggering the P06B1 code.
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