P06B2 GMC Code - Sensor Supply Voltage Circuit High 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
- P06B2 GMC indicates Sensor Supply Voltage Circuit High 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 P06B2 GMC 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 greater than 18.6 V for 1 second.
What are the Possible Causes of the DTC P06B2 GMC?
- 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 P06B2 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 P06B2 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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Information for Specific GMC Models
- P06B2 2014 GMC Sierra — Sensor Supply Voltage Circuit High Voltage
- P06B2 2015 GMC Sierra — Sensor Supply Voltage Circuit High Voltage
- P06B2 2016 GMC Sierra — Sensor Supply Voltage Circuit High Voltage
- P06B2 2017 GMC Sierra — Sensor Supply Voltage Circuit High Voltage
- P06B2 2018 GMC Sierra — Sensor Supply Voltage Circuit High Voltage
Frequently Asked Questions about P06B2 GMC Code
1. What are common symptoms of OBDII code P06B2 in a GMC vehicle?
- Common symptoms include engine misfires, rough idling, poor acceleration, and potential stalling.
2. What does the OBDII code P06B2 GMC indicate?
- The code P06B2 indicates a high voltage condition in the sensor supply voltage circuit of the vehicle.
3. What are the potential causes of OBDII code P06B2 in a GMC vehicle?
- Potential causes include a faulty sensor, damaged wiring or connectors, a malfunctioning powertrain control module (PCM), or a short circuit in the sensor supply voltage circuit.
4. How can I diagnose the sensor supply voltage circuit high voltage issue related to code P06B2 in my GMC vehicle?
- You can use a multimeter to test the voltage in the sensor supply circuit, inspect the wiring and connectors for damage, and perform a thorough visual inspection for any obvious issues.
5. What are some repair tips for addressing OBDII code P06B2 in a GMC vehicle?
- Repair tips may include repairing or replacing damaged wiring and connectors, replacing the faulty sensor, resetting the PCM, and clearing the trouble codes to see if the issue persists.
6. Can driving with OBDII code P06B2 in a GMC vehicle cause further damage?
- Continuing to drive with this code may lead to poor engine performance, reduced fuel efficiency, and potential damage to other components if left unresolved for an extended period.
7. Is it safe to clear the OBDII code P06B2 in a GMC vehicle without addressing the underlying issue?
- Clearing the code without addressing the underlying issue is not recommended, as it may temporarily turn off the check engine light but will not fix the root cause of the problem.
8. How can a professional mechanic help with diagnosing and repairing OBDII code P06B2 in a GMC vehicle?
- A professional mechanic can use specialized diagnostic tools to pinpoint the exact cause of the high voltage condition, perform thorough inspections, and recommend the necessary repairs to resolve the issue.
9. Are there any common related codes that may accompany OBDII code P06B2 in a GMC vehicle?
- Depending on the underlying issue, related codes such as P06B0 (Sensor Supply Voltage Circuit Low Voltage) or P06B1 (Sensor Supply Voltage Circuit Range/Performance) may accompany P06B2.
10. How can I prevent OBDII code P06B2 from occurring in my GMC vehicle in the future?
- Regular maintenance, inspecting and replacing worn-out components, and addressing any electrical issues promptly can help prevent the recurrence of OBDII code P06B2 in your GMC vehicle.
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